15505909572552 has 128 divisors (see below), whose sum is σ = 45941715456000. Its totient is φ = 4268673209088.

The previous prime is 15505909572547. The next prime is 15505909572577. The reversal of 15505909572552 is 25527590950551.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 11469052 + ... + 12749547.

It is an arithmetic number, because the mean of its divisors is an integer number (358919652000).

Almost surely, 2^{15505909572552} is an apocalyptic number.

15505909572552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15505909572552 is an abundant number, since it is smaller than the sum of its proper divisors (30435805883448).

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

15505909572552 is a wasteful number, since it uses less digits than its factorization.

15505909572552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24218755 (or 24218751 counting only the distinct ones).

The product of its (nonzero) digits is 35437500, while the sum is 60.

The spelling of 15505909572552 in words is "fifteen trillion, five hundred five billion, nine hundred nine million, five hundred seventy-two thousand, five hundred fifty-two".