51213130404 has 48 divisors (see below), whose sum is σ = 126619745280. Its totient is φ = 16065453600.

The previous prime is 51213130399. The next prime is 51213130439. The reversal of 51213130404 is 40403131215.

It is a happy number.

51213130404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709344 + ... + 778199.

It is an arithmetic number, because the mean of its divisors is an integer number (2637911360).

Almost surely, 2^51213130404 is an apocalyptic number.

It is an amenable number.

51213130404 is an abundant number, since it is smaller than the sum of its proper divisors (75406614876).

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

51213130404 is a wasteful number, since it uses less digits than its factorization.

51213130404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487720 (or 1487718 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 51213130404 its reverse (40403131215), we get a palindrome (91616261619).

The spelling of 51213130404 in words is "fifty-one billion, two hundred thirteen million, one hundred thirty thousand, four hundred four".