13391660699128 has 32 divisors (see below), whose sum is σ = 25196375468160. Its totient is φ = 6672637968480.

The previous prime is 13391660699107. The next prime is 13391660699147. The reversal of 13391660699128 is 82199606619331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13391660699128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9350875 + ... + 10687477.

It is an arithmetic number, because the mean of its divisors is an integer number (787386733380).

Almost surely, 2^{13391660699128} is an apocalyptic number.

It is an amenable number.

13391660699128 is a deficient number, since it is larger than the sum of its proper divisors (11804714769032).

13391660699128 is a wasteful number, since it uses less digits than its factorization.

13391660699128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340947 (or 1340943 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 64.

The spelling of 13391660699128 in words is "thirteen trillion, three hundred ninety-one billion, six hundred sixty million, six hundred ninety-nine thousand, one hundred twenty-eight".