51011132964431 has 2 divisors, whose sum is σ = 51011132964432. Its totient is φ = 51011132964430.

The previous prime is 51011132964427. The next prime is 51011132964503. The reversal of 51011132964431 is 13446923111015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51011132964431 - 2² = 51011132964427 is a prime.

It is a super-2 number, since 2×51011132964431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51011132964731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505566482215 + 25505566482216.

It is an arithmetic number, because the mean of its divisors is an integer number (25505566482216).

Almost surely, 2^{51011132964431} is an apocalyptic number.

51011132964431 is a deficient number, since it is larger than the sum of its proper divisors (1).

51011132964431 is an equidigital number, since it uses as much as digits as its factorization.

51011132964431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 51011132964431 in words is "fifty-one trillion, eleven billion, one hundred thirty-two million, nine hundred sixty-four thousand, four hundred thirty-one".