51901343957 has 8 divisors (see below), whose sum is σ = 53149609920. Its totient is φ = 50654953440.

The previous prime is 51901343947. The next prime is 51901343981. The reversal of 51901343957 is 75934310915.

51901343957 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 51901343957 - 2²⁸ = 51632908501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51901343947) 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, 412769 + ... + 523622.

It is an arithmetic number, because the mean of its divisors is an integer number (6643701240).

Almost surely, 2^51901343957 is an apocalyptic number.

It is an amenable number.

51901343957 is a deficient number, since it is larger than the sum of its proper divisors (1248265963).

51901343957 is a wasteful number, since it uses less digits than its factorization.

51901343957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937723.

The product of its (nonzero) digits is 510300, while the sum is 47.

The spelling of 51901343957 in words is "fifty-one billion, nine hundred one million, three hundred forty-three thousand, nine hundred fifty-seven".