50391408125 has 20 divisors (see below), whose sum is σ = 66283282560. Its totient is φ = 38191374000.

The previous prime is 50391408079. The next prime is 50391408139. The reversal of 50391408125 is 52180419305.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-50391408125 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2109869 + ... + 2133618.

It is an arithmetic number, because the mean of its divisors is an integer number (3314164128).

Almost surely, 2^50391408125 is an apocalyptic number.

It is an amenable number.

50391408125 is a deficient number, since it is larger than the sum of its proper divisors (15891874435).

50391408125 is an equidigital number, since it uses as much as digits as its factorization.

50391408125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243526 (or 4243511 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 50391408125 in words is "fifty billion, three hundred ninety-one million, four hundred eight thousand, one hundred twenty-five".