51231631595 has 4 divisors (see below), whose sum is σ = 61477957920. Its totient is φ = 40985305272.

The previous prime is 51231631573. The next prime is 51231631609. The reversal of 51231631595 is 59513613215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51231631595 - 2¹⁶ = 51231566059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5123163155 + ... + 5123163164.

It is an arithmetic number, because the mean of its divisors is an integer number (15369489480).

Almost surely, 2^51231631595 is an apocalyptic number.

51231631595 is a deficient number, since it is larger than the sum of its proper divisors (10246326325).

51231631595 is a wasteful number, since it uses less digits than its factorization.

51231631595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10246326324.

The product of its digits is 121500, while the sum is 41.

The spelling of 51231631595 in words is "fifty-one billion, two hundred thirty-one million, six hundred thirty-one thousand, five hundred ninety-five".