15987760680 has 64 divisors (see below), whose sum is σ = 49259600640. Its totient is φ = 4148174592.

The previous prime is 15987760673. The next prime is 15987760681. The reversal of 15987760680 is 8606778951.

It is a self number, because there is not a number n which added to its sum of digits gives 15987760680.

It is not an unprimeable number, because it can be changed into a prime (15987760681) 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 15 ways as a sum of consecutive naturals, for example, 1795984 + ... + 1804863.

It is an arithmetic number, because the mean of its divisors is an integer number (769681260).

Almost surely, 2^15987760680 is an apocalyptic number.

15987760680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15987760680 is an abundant number, since it is smaller than the sum of its proper divisors (33271839960).

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

15987760680 is a wasteful number, since it uses less digits than its factorization.

15987760680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600898 (or 3600894 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 15987760680 in words is "fifteen billion, nine hundred eighty-seven million, seven hundred sixty thousand, six hundred eighty".