15680680625920 has 144 divisors (see below), whose sum is σ = 37791977126400. Its totient is φ = 6233627676672.

The previous prime is 15680680625903. The next prime is 15680680625993. The reversal of 15680680625920 is 2952608608651.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225901939 + ... + 225971341.

It is an arithmetic number, because the mean of its divisors is an integer number (262444285600).

Almost surely, 2^{15680680625920} is an apocalyptic number.

15680680625920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15680680625920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18895988563200).

15680680625920 is an abundant number, since it is smaller than the sum of its proper divisors (22111296500480).

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

15680680625920 is an equidigital number, since it uses as much as digits as its factorization.

15680680625920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70510 (or 70496 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 15680680625920 in words is "fifteen trillion, six hundred eighty billion, six hundred eighty million, six hundred twenty-five thousand, nine hundred twenty".