51250706631 has 12 divisors (see below), whose sum is σ = 76416824640. Its totient is φ = 33064971840.

The previous prime is 51250706627. The next prime is 51250706671. The reversal of 51250706631 is 13660705215.

51250706631 is a `hidden beast` number, since 5 + 12 + 5 + 0 + 7 + 0 + 6 + 631 = 666.

It is not a de Polignac number, because 51250706631 - 2² = 51250706627 is a prime.

It is a super-2 number, since 2×51250706631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51250706671) 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 11 ways as a sum of consecutive naturals, for example, 91846866 + ... + 91847423.

It is an arithmetic number, because the mean of its divisors is an integer number (6368068720).

Almost surely, 2^51250706631 is an apocalyptic number.

51250706631 is a deficient number, since it is larger than the sum of its proper divisors (25166118009).

51250706631 is a wasteful number, since it uses less digits than its factorization.

51250706631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183694326 (or 183694323 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 51250706631 in words is "fifty-one billion, two hundred fifty million, seven hundred six thousand, six hundred thirty-one".