51516560501 has 16 divisors (see below), whose sum is σ = 60489136896. Its totient is φ = 42948112896.

The previous prime is 51516560449. The next prime is 51516560503. The reversal of 51516560501 is 10506561515.

It is not a de Polignac number, because 51516560501 - 2¹⁴ = 51516544117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51516560503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713285 + ... + 782181.

It is an arithmetic number, because the mean of its divisors is an integer number (3780571056).

Almost surely, 2^51516560501 is an apocalyptic number.

It is an amenable number.

51516560501 is a deficient number, since it is larger than the sum of its proper divisors (8972576395).

51516560501 is a wasteful number, since it uses less digits than its factorization.

51516560501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71828.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 51516560501 in words is "fifty-one billion, five hundred sixteen million, five hundred sixty thousand, five hundred one".