13691661314790 has 32 divisors (see below), whose sum is σ = 34589460165120. Its totient is φ = 3458946016224.

The previous prime is 13691661314741. The next prime is 13691661314813. The reversal of 13691661314790 is 9741316619631.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 13691661314790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12010228654 + ... + 12010229793.

It is an arithmetic number, because the mean of its divisors is an integer number (1080920630160).

Almost surely, 2^{13691661314790} is an apocalyptic number.

13691661314790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13691661314790 is an abundant number, since it is smaller than the sum of its proper divisors (20897798850330).

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

13691661314790 is a wasteful number, since it uses less digits than its factorization.

13691661314790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24020458476.

The product of its (nonzero) digits is 4408992, while the sum is 57.

The spelling of 13691661314790 in words is "thirteen trillion, six hundred ninety-one billion, six hundred sixty-one million, three hundred fourteen thousand, seven hundred ninety".