51205432504 has 8 divisors (see below), whose sum is σ = 96010185960. Its totient is φ = 25602716248.

The previous prime is 51205432493. The next prime is 51205432517. The reversal of 51205432504 is 40523450215.

51205432504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200339524 + ... + 3200339539.

It is an arithmetic number, because the mean of its divisors is an integer number (12001273245).

Almost surely, 2^51205432504 is an apocalyptic number.

It is an amenable number.

51205432504 is a deficient number, since it is larger than the sum of its proper divisors (44804753456).

51205432504 is a wasteful number, since it uses less digits than its factorization.

51205432504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400679069 (or 6400679065 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 51205432504 its reverse (40523450215), we get a palindrome (91728882719).

The spelling of 51205432504 in words is "fifty-one billion, two hundred five million, four hundred thirty-two thousand, five hundred four".