51516363245 has 16 divisors (see below), whose sum is σ = 64169964288. Its totient is φ = 39674955840.

The previous prime is 51516363233. The next prime is 51516363271. The reversal of 51516363245 is 54236361515.

It is not a de Polignac number, because 51516363245 - 2²² = 51512168941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 1782539 + ... + 1811208.

It is an arithmetic number, because the mean of its divisors is an integer number (4010622768).

Almost surely, 2^51516363245 is an apocalyptic number.

It is an amenable number.

51516363245 is a deficient number, since it is larger than the sum of its proper divisors (12653601043).

51516363245 is a wasteful number, since it uses less digits than its factorization.

51516363245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593860.

The product of its digits is 324000, while the sum is 41.

The spelling of 51516363245 in words is "fifty-one billion, five hundred sixteen million, three hundred sixty-three thousand, two hundred forty-five".