125991876393 has 12 divisors (see below), whose sum is σ = 182902782400. Its totient is φ = 83572499736.

The previous prime is 125991876371. The next prime is 125991876397. The reversal of 125991876393 is 393678199521.

125991876393 is a `hidden beast` number, since 1 + 2 + 599 + 1 + 8 + 7 + 6 + 39 + 3 = 666.

It is not a de Polignac number, because 125991876393 - 2¹² = 125991872297 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 125991876393.

It is not an unprimeable number, because it can be changed into a prime (125991876397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35171821 + ... + 35175402.

Almost surely, 2^125991876393 is an apocalyptic number.

It is an amenable number.

125991876393 is a deficient number, since it is larger than the sum of its proper divisors (56910906007).

125991876393 is a wasteful number, since it uses less digits than its factorization.

125991876393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70347428 (or 70347425 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The spelling of 125991876393 in words is "one hundred twenty-five billion, nine hundred ninety-one million, eight hundred seventy-six thousand, three hundred ninety-three".