13913689655 has 4 divisors (see below), whose sum is σ = 16696427592. Its totient is φ = 11130951720.

The previous prime is 13913689651. The next prime is 13913689703. The reversal of 13913689655 is 55698631931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13913689655 - 2² = 13913689651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13913689655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13913689651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391368961 + ... + 1391368970.

It is an arithmetic number, because the mean of its divisors is an integer number (4174106898).

Almost surely, 2^13913689655 is an apocalyptic number.

13913689655 is a deficient number, since it is larger than the sum of its proper divisors (2782737937).

13913689655 is an equidigital number, since it uses as much as digits as its factorization.

13913689655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782737936.

The product of its digits is 5248800, while the sum is 56.

The spelling of 13913689655 in words is "thirteen billion, nine hundred thirteen million, six hundred eighty-nine thousand, six hundred fifty-five".