13097921680 has 40 divisors (see below), whose sum is σ = 30551919552. Its totient is φ = 5222093184.

The previous prime is 13097921657. The next prime is 13097921687. The reversal of 13097921680 is 8612979031.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 13097921680.

It is not an unprimeable number, because it can be changed into a prime (13097921687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242092 + ... + 291211.

Almost surely, 2^13097921680 is an apocalyptic number.

13097921680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13097921680 is an abundant number, since it is smaller than the sum of its proper divisors (17453997872).

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

13097921680 is a wasteful number, since it uses less digits than its factorization.

13097921680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533623 (or 533617 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 13097921680 in words is "thirteen billion, ninety-seven million, nine hundred twenty-one thousand, six hundred eighty".