51051912931 has 8 divisors (see below), whose sum is σ = 52731471744. Its totient is φ = 49374399360.

The previous prime is 51051912811. The next prime is 51051912937. The reversal of 51051912931 is 13921915015.

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

It is not a de Polignac number, because 51051912931 - 2⁷ = 51051912803 is a prime.

It is a super-2 number, since 2×51051912931² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51051912937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460486 + ... + 560491.

It is an arithmetic number, because the mean of its divisors is an integer number (6591433968).

Almost surely, 2^51051912931 is an apocalyptic number.

51051912931 is a deficient number, since it is larger than the sum of its proper divisors (1679558813).

51051912931 is a wasteful number, since it uses less digits than its factorization.

51051912931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022621.

The product of its (nonzero) digits is 12150, while the sum is 37.

The spelling of 51051912931 in words is "fifty-one billion, fifty-one million, nine hundred twelve thousand, nine hundred thirty-one".