51431355105 has 48 divisors (see below), whose sum is σ = 89180087040. Its totient is φ = 25299316224.

The previous prime is 51431355061. The next prime is 51431355133. The reversal of 51431355105 is 50155313415.

It is not a de Polignac number, because 51431355105 - 2³⁴ = 34251485921 is a prime.

It is a super-2 number, since 2×51431355105² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3356301 + ... + 3371589.

It is an arithmetic number, because the mean of its divisors is an integer number (1857918480).

Almost surely, 2^51431355105 is an apocalyptic number.

It is an amenable number.

51431355105 is a deficient number, since it is larger than the sum of its proper divisors (37748731935).

51431355105 is a wasteful number, since it uses less digits than its factorization.

51431355105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16650 (or 16637 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 51431355105 in words is "fifty-one billion, four hundred thirty-one million, three hundred fifty-five thousand, one hundred five".