51313015204 has 48 divisors (see below), whose sum is σ = 99666395136. Its totient is φ = 22920256800.

The previous prime is 51313015183. The next prime is 51313015211. The reversal of 51313015204 is 40251031315.

It is a happy number.

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, 932317 + ... + 985819.

It is an arithmetic number, because the mean of its divisors is an integer number (2076383232).

Almost surely, 2^51313015204 is an apocalyptic number.

It is an amenable number.

51313015204 is a deficient number, since it is larger than the sum of its proper divisors (48353379932).

51313015204 is a wasteful number, since it uses less digits than its factorization.

51313015204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53896 (or 53894 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 51313015204 its reverse (40251031315), we get a palindrome (91564046519).

The spelling of 51313015204 in words is "fifty-one billion, three hundred thirteen million, fifteen thousand, two hundred four".