13951887701939 has 4 divisors (see below), whose sum is σ = 15220241129400. Its totient is φ = 12683534274480.

The previous prime is 13951887701933. The next prime is 13951887701981. The reversal of 13951887701939 is 93910778815931.

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

It is a cyclic number.

It is not a de Polignac number, because 13951887701939 - 2³² = 13947592734643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13951887701933) 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, 634176713714 + ... + 634176713735.

It is an arithmetic number, because the mean of its divisors is an integer number (3805060282350).

Almost surely, 2^{13951887701939} is an apocalyptic number.

13951887701939 is a deficient number, since it is larger than the sum of its proper divisors (1268353427461).

13951887701939 is a wasteful number, since it uses less digits than its factorization.

13951887701939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268353427460.

The product of its (nonzero) digits is 102876480, while the sum is 71.

The spelling of 13951887701939 in words is "thirteen trillion, nine hundred fifty-one billion, eight hundred eighty-seven million, seven hundred one thousand, nine hundred thirty-nine".