51311153457 has 8 divisors (see below), whose sum is σ = 76016523680. Its totient is φ = 34207435620.

The previous prime is 51311153419. The next prime is 51311153459. The reversal of 51311153457 is 75435111315.

51311153457 is a `hidden beast` number, since 5 + 1 + 3 + 111 + 534 + 5 + 7 = 666.

It is not a de Polignac number, because 51311153457 - 2²² = 51306959153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51311153459) 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, 950206519 + ... + 950206572.

It is an arithmetic number, because the mean of its divisors is an integer number (9502065460).

Almost surely, 2^51311153457 is an apocalyptic number.

It is an amenable number.

51311153457 is a deficient number, since it is larger than the sum of its proper divisors (24705370223).

51311153457 is a wasteful number, since it uses less digits than its factorization.

51311153457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900413100 (or 1900413094 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The spelling of 51311153457 in words is "fifty-one billion, three hundred eleven million, one hundred fifty-three thousand, four hundred fifty-seven".