51612020260404 has 48 divisors (see below), whose sum is σ = 121349087635776. Its totient is φ = 17072433331200.

The previous prime is 51612020260391. The next prime is 51612020260457. The reversal of 51612020260404 is 40406202021615.

51612020260404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 133365474 + ... + 133751910.

It is an arithmetic number, because the mean of its divisors is an integer number (2528105992412).

Almost surely, 2^{51612020260404} is an apocalyptic number.

It is an amenable number.

51612020260404 is an abundant number, since it is smaller than the sum of its proper divisors (69737067375372).

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

51612020260404 is a wasteful number, since it uses less digits than its factorization.

51612020260404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471536 (or 471534 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 51612020260404 in words is "fifty-one trillion, six hundred twelve billion, twenty million, two hundred sixty thousand, four hundred four".