51373506631 has 2 divisors, whose sum is σ = 51373506632. Its totient is φ = 51373506630.

The previous prime is 51373506623. The next prime is 51373506689. The reversal of 51373506631 is 13660537315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51373506631 - 2³ = 51373506623 is a prime.

It is a super-2 number, since 2×51373506631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51373506131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25686753315 + 25686753316.

It is an arithmetic number, because the mean of its divisors is an integer number (25686753316).

Almost surely, 2^51373506631 is an apocalyptic number.

51373506631 is a deficient number, since it is larger than the sum of its proper divisors (1).

51373506631 is an equidigital number, since it uses as much as digits as its factorization.

51373506631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 40.

The spelling of 51373506631 in words is "fifty-one billion, three hundred seventy-three million, five hundred six thousand, six hundred thirty-one".