15506555006512 has 20 divisors (see below), whose sum is σ = 31079948613120. Its totient is φ = 7485923106368.

The previous prime is 15506555006491. The next prime is 15506555006531. The reversal of 15506555006512 is 21560055560551.

It is a super-2 number, since 2×15506555006512² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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, 16709649328 + ... + 16709650255.

It is an arithmetic number, because the mean of its divisors is an integer number (1553997430656).

Almost surely, 2^{15506555006512} is an apocalyptic number.

It is an amenable number.

15506555006512 is an abundant number, since it is smaller than the sum of its proper divisors (15573393606608).

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

15506555006512 is a wasteful number, since it uses less digits than its factorization.

15506555006512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33419299620 (or 33419299614 counting only the distinct ones).

The product of its (nonzero) digits is 1125000, while the sum is 46.

The spelling of 15506555006512 in words is "fifteen trillion, five hundred six billion, five hundred fifty-five million, six thousand, five hundred twelve".