51331413316 has 12 divisors (see below), whose sum is σ = 90756056188. Its totient is φ = 25401111552.

The previous prime is 51331413293. The next prime is 51331413323. The reversal of 51331413316 is 61331413315.

It can be written as a sum of positive squares in 2 ways, for example, as 38416000000 + 12915413316 = 196000^2 + 113646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66148341 + ... + 66149116.

Almost surely, 2^51331413316 is an apocalyptic number.

It is an amenable number.

51331413316 is a deficient number, since it is larger than the sum of its proper divisors (39424642872).

51331413316 is a wasteful number, since it uses less digits than its factorization.

51331413316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132297558 (or 132297556 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

Subtracting 51331413316 from its reverse (61331413315), we obtain a palindrome (9999999999).

The spelling of 51331413316 in words is "fifty-one billion, three hundred thirty-one million, four hundred thirteen thousand, three hundred sixteen".