51313287779276 has 48 divisors (see below), whose sum is σ = 95992509365760. Its totient is φ = 23931649324800.

The previous prime is 51313287779269. The next prime is 51313287779321. The reversal of 51313287779276 is 67297778231315.

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, 18487976 + ... + 21081551.

It is an arithmetic number, because the mean of its divisors is an integer number (1999843945120).

Almost surely, 2^{51313287779276} is an apocalyptic number.

It is an amenable number.

51313287779276 is a deficient number, since it is larger than the sum of its proper divisors (44679221586484).

51313287779276 is a wasteful number, since it uses less digits than its factorization.

51313287779276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39569814 (or 39569812 counting only the distinct ones).

The product of its digits is 186701760, while the sum is 68.

The spelling of 51313287779276 in words is "fifty-one trillion, three hundred thirteen billion, two hundred eighty-seven million, seven hundred seventy-nine thousand, two hundred seventy-six".