15977680512 has 32 divisors (see below), whose sum is σ = 42440714880. Its totient is φ = 5325893376.

The previous prime is 15977680487. The next prime is 15977680517. The reversal of 15977680512 is 21508677951.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (15977680517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20803888 + ... + 20804655.

It is an arithmetic number, because the mean of its divisors is an integer number (1326272340).

Almost surely, 2^15977680512 is an apocalyptic number.

15977680512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15977680512 is an abundant number, since it is smaller than the sum of its proper divisors (26463034368).

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

15977680512 is an equidigital number, since it uses as much as digits as its factorization.

15977680512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41608560 (or 41608548 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 15977680512 in words is "fifteen billion, nine hundred seventy-seven million, six hundred eighty thousand, five hundred twelve".