13951451957 has 4 divisors (see below), whose sum is σ = 13951689600. Its totient is φ = 13951214316.

The previous prime is 13951451929. The next prime is 13951451971. The reversal of 13951451957 is 75915415931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75915415931 = 1171 ⋅64829561.

It is a cyclic number.

It is not a de Polignac number, because 13951451957 - 2⁶ = 13951451893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13951451257) 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, 40028 + ... + 171770.

It is an arithmetic number, because the mean of its divisors is an integer number (3487922400).

Almost surely, 2^13951451957 is an apocalyptic number.

It is an amenable number.

13951451957 is a deficient number, since it is larger than the sum of its proper divisors (237643).

13951451957 is a wasteful number, since it uses less digits than its factorization.

13951451957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237642.

The product of its digits is 850500, while the sum is 50.

The spelling of 13951451957 in words is "thirteen billion, nine hundred fifty-one million, four hundred fifty-one thousand, nine hundred fifty-seven".