Base | Representation |
---|---|
bin | 100100011101010000… |
… | …0101000101010001001 |
3 | 21111002020102011110101 |
4 | 1020322200220222021 |
5 | 2240320001420001 |
6 | 55544424445401 |
7 | 5441060621341 |
oct | 1107240505211 |
9 | 244066364411 |
10 | 78291045001 |
11 | 30226287984 |
12 | 1320b619861 |
13 | 74c9071540 |
14 | 3b09c01d21 |
15 | 208344ba01 |
hex | 123a828a89 |
78291045001 has 8 divisors (see below), whose sum is σ = 84316567104. Its totient is φ = 72265970640.
The previous prime is 78291044983. The next prime is 78291045113. The reversal of 78291045001 is 10054019287.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 78291045001 - 213 = 78291036809 is a prime.
It is a super-2 number, since 2×782910450012 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (78291045401) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310230 + ... + 502816.
It is an arithmetic number, because the mean of its divisors is an integer number (10539570888).
Almost surely, 278291045001 is an apocalyptic number.
It is an amenable number.
78291045001 is a deficient number, since it is larger than the sum of its proper divisors (6025522103).
78291045001 is a wasteful number, since it uses less digits than its factorization.
78291045001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 223871.
The product of its (nonzero) digits is 20160, while the sum is 37.
The spelling of 78291045001 in words is "seventy-eight billion, two hundred ninety-one million, forty-five thousand, one".
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