51461021924 has 24 divisors (see below), whose sum is σ = 97012200768. Its totient is φ = 23744391840.

The previous prime is 51461021923. The next prime is 51461021993. The reversal of 51461021924 is 42912016415.

It is not an unprimeable number, because it can be changed into a prime (51461021923) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 41639 + ... + 323505.

It is an arithmetic number, because the mean of its divisors is an integer number (4042175032).

Almost surely, 2^51461021924 is an apocalyptic number.

It is an amenable number.

51461021924 is a deficient number, since it is larger than the sum of its proper divisors (45551178844).

51461021924 is a wasteful number, since it uses less digits than its factorization.

51461021924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285395 (or 285393 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 51461021924 in words is "fifty-one billion, four hundred sixty-one million, twenty-one thousand, nine hundred twenty-four".