51402365464 has 96 divisors (see below), whose sum is σ = 105359728320. Its totient is φ = 23491000512.

The previous prime is 51402365459. The next prime is 51402365479. The reversal of 51402365464 is 46456320415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10304779 + ... + 10309765.

It is an arithmetic number, because the mean of its divisors is an integer number (1097497170).

Almost surely, 2^51402365464 is an apocalyptic number.

It is an amenable number.

51402365464 is an abundant number, since it is smaller than the sum of its proper divisors (53957362856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51402365464 is a wasteful number, since it uses less digits than its factorization.

51402365464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157 (or 5134 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 51402365464 its reverse (46456320415), we get a palindrome (97858685879).

The spelling of 51402365464 in words is "fifty-one billion, four hundred two million, three hundred sixty-five thousand, four hundred sixty-four".