15165664556 has 12 divisors (see below), whose sum is σ = 30331329168. Its totient is φ = 6499570512.

The previous prime is 15165664543. The next prime is 15165664559. The reversal of 15165664556 is 65546656151.

It is a happy number.

15165664556 is an admirable number.

It is a super-2 number, since 2×15165664556² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (15165664559) 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 3 ways as a sum of consecutive naturals, for example, 270815411 + ... + 270815466.

It is an arithmetic number, because the mean of its divisors is an integer number (2527610764).

Almost surely, 2^15165664556 is an apocalyptic number.

It is an amenable number.

15165664556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15165664556 is a wasteful number, since it uses less digits than its factorization.

15165664556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541630888 (or 541630886 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 50.

The spelling of 15165664556 in words is "fifteen billion, one hundred sixty-five million, six hundred sixty-four thousand, five hundred fifty-six".