125663856916 has 48 divisors (see below), whose sum is σ = 237503577024. Its totient is φ = 57833508096.

The previous prime is 125663856859. The next prime is 125663856937. The reversal of 125663856916 is 619658366521.

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, 40758711 + ... + 40761793.

It is an arithmetic number, because the mean of its divisors is an integer number (4947991188).

Almost surely, 2^125663856916 is an apocalyptic number.

It is an amenable number.

125663856916 is a deficient number, since it is larger than the sum of its proper divisors (111839720108).

125663856916 is a wasteful number, since it uses less digits than its factorization.

125663856916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080 (or 5078 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 58.

The spelling of 125663856916 in words is "one hundred twenty-five billion, six hundred sixty-three million, eight hundred fifty-six thousand, nine hundred sixteen".