51365656315 has 24 divisors (see below), whose sum is σ = 68324790240. Its totient is φ = 36993758208.

The previous prime is 51365656301. The next prime is 51365656327.

51365656315 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51365656315 - 2³¹ = 49218172667 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 739530 + ... + 805999.

It is an arithmetic number, because the mean of its divisors is an integer number (2846866260).

Almost surely, 2^51365656315 is an apocalyptic number.

51365656315 is a deficient number, since it is larger than the sum of its proper divisors (16959133925).

51365656315 is a wasteful number, since it uses less digits than its factorization.

51365656315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545591 (or 1545574 counting only the distinct ones).

The product of its digits is 1215000, while the sum is 46.

The spelling of 51365656315 in words is "fifty-one billion, three hundred sixty-five million, six hundred fifty-six thousand, three hundred fifteen".