51214566631065 has 64 divisors (see below), whose sum is σ = 83556183536640. Its totient is φ = 26781265889280.

The previous prime is 51214566631021. The next prime is 51214566631091. The reversal of 51214566631065 is 56013666541215.

It is not a de Polignac number, because 51214566631065 - 2⁶ = 51214566631001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51214566630999 and 51214566631017.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2809501371 + ... + 2809519599.

It is an arithmetic number, because the mean of its divisors is an integer number (1305565367760).

Almost surely, 2^{51214566631065} is an apocalyptic number.

It is an amenable number.

51214566631065 is a deficient number, since it is larger than the sum of its proper divisors (32341616905575).

51214566631065 is a wasteful number, since it uses less digits than its factorization.

51214566631065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33314.

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 51214566631065 in words is "fifty-one trillion, two hundred fourteen billion, five hundred sixty-six million, six hundred thirty-one thousand, sixty-five".