15566052980 has 12 divisors (see below), whose sum is σ = 32688711300. Its totient is φ = 6226421184.

The previous prime is 15566052977. The next prime is 15566053003. The reversal of 15566052980 is 8925066551.

It can be written as a sum of positive squares in 2 ways, for example, as 2092879504 + 13473173476 = 45748^2 + 116074^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389151305 + ... + 389151344.

It is an arithmetic number, because the mean of its divisors is an integer number (2724059275).

Almost surely, 2^15566052980 is an apocalyptic number.

15566052980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15566052980 is an abundant number, since it is smaller than the sum of its proper divisors (17122658320).

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

15566052980 is a wasteful number, since it uses less digits than its factorization.

15566052980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778302658 (or 778302656 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 15566052980 in words is "fifteen billion, five hundred sixty-six million, fifty-two thousand, nine hundred eighty".