Base | Representation |
---|---|
bin | 100101111111001001… |
… | …111011101000110101 |
3 | 10220021120211212210000 |
4 | 211333021323220311 |
5 | 1132013213000134 |
6 | 30423204421513 |
7 | 2642523261402 |
oct | 457711735065 |
9 | 126246755700 |
10 | 40788015669 |
11 | 16330853965 |
12 | 7aa39a7899 |
13 | 3b003ca61b |
14 | 1d8d0d72a9 |
15 | 10dac92e99 |
hex | 97f27ba35 |
40788015669 has 20 divisors (see below), whose sum is σ = 61022504620. Its totient is φ = 27150837120.
The previous prime is 40788015617. The next prime is 40788015707. The reversal of 40788015669 is 96651088704.
40788015669 is a `hidden beast` number, since 4 + 0 + 78 + 8 + 0 + 1 + 566 + 9 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 16348946769 + 24439068900 = 127863^2 + 156330^2 .
It is not a de Polignac number, because 40788015669 - 28 = 40788015413 is a prime.
It is a super-2 number, since 2×407880156692 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (40788015869) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 327364 + ... + 434445.
It is an arithmetic number, because the mean of its divisors is an integer number (3051125231).
Almost surely, 240788015669 is an apocalyptic number.
It is an amenable number.
40788015669 is a deficient number, since it is larger than the sum of its proper divisors (20234488951).
40788015669 is an equidigital number, since it uses as much as digits as its factorization.
40788015669 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 762482 (or 762473 counting only the distinct ones).
The product of its (nonzero) digits is 2903040, while the sum is 54.
The spelling of 40788015669 in words is "forty billion, seven hundred eighty-eight million, fifteen thousand, six hundred sixty-nine".
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