15564656612272 has 20 divisors (see below), whose sum is σ = 31930435256616. Its totient is φ = 7324544288000.

The previous prime is 15564656612249. The next prime is 15564656612273. The reversal of 15564656612272 is 27221665646551.

It is not an unprimeable number, because it can be changed into a prime (15564656612273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28611500854 + ... + 28611501397.

Almost surely, 2^{15564656612272} is an apocalyptic number.

It is an amenable number.

15564656612272 is an abundant number, since it is smaller than the sum of its proper divisors (16365778644344).

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

15564656612272 is a wasteful number, since it uses less digits than its factorization.

15564656612272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57223002276 (or 57223002270 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 58.

The spelling of 15564656612272 in words is "fifteen trillion, five hundred sixty-four billion, six hundred fifty-six million, six hundred twelve thousand, two hundred seventy-two".