51239335957 has 8 divisors (see below), whose sum is σ = 51552216576. Its totient is φ = 50926527792.

The previous prime is 51239335949. The next prime is 51239335997. The reversal of 51239335957 is 75953393215.

51239335957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51239335957 - 2³ = 51239335949 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 (51239335997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2286268 + ... + 2308570.

It is an arithmetic number, because the mean of its divisors is an integer number (6444027072).

Almost surely, 2^51239335957 is an apocalyptic number.

It is an amenable number.

51239335957 is a deficient number, since it is larger than the sum of its proper divisors (312880619).

51239335957 is a wasteful number, since it uses less digits than its factorization.

51239335957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36227.

The product of its digits is 3827250, while the sum is 52.

The spelling of 51239335957 in words is "fifty-one billion, two hundred thirty-nine million, three hundred thirty-five thousand, nine hundred fifty-seven".