| Base | Representation |
|---|---|
| bin | 1001011001010001110… |
| … | …1011100101110000110 |
| 3 | 120102121120010001120000 |
| 4 | 2112110131130232012 |
| 5 | 10121024030201414 |
| 6 | 202052003222130 |
| 7 | 14442516635256 |
| oct | 2262435345606 |
| 9 | 512546101500 |
| 10 | 161404537734 |
| 11 | 624a6721150 |
| 12 | 27346077946 |
| 13 | 122b324693b |
| 14 | 7b52287966 |
| 15 | 42e9e2bb09 |
| hex | 259475cb86 |
161404537734 has 80 divisors (see below), whose sum is σ = 395146002240. Its totient is φ = 48835891440.
The previous prime is 161404537727. The next prime is 161404537739. The reversal of 161404537734 is 437735404161.
161404537734 is a `hidden beast` number, since 1 + 6 + 1 + 40 + 4 + 537 + 73 + 4 = 666.
161404537734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×1614045377342 (a number of 23 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 161404537734.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (161404537739) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1105617 + ... + 1243059.
It is an arithmetic number, because the mean of its divisors is an integer number (4939325028).
Almost surely, 2161404537734 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 161404537734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197573001120).
161404537734 is an abundant number, since it is smaller than the sum of its proper divisors (233741464506).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
161404537734 is a wasteful number, since it uses less digits than its factorization.
161404537734 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 138127 (or 138118 counting only the distinct ones).
The product of its (nonzero) digits is 846720, while the sum is 45.
The spelling of 161404537734 in words is "one hundred sixty-one billion, four hundred four million, five hundred thirty-seven thousand, seven hundred thirty-four".
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