51516560507 has 2 divisors, whose sum is σ = 51516560508. Its totient is φ = 51516560506.

The previous prime is 51516560503. The next prime is 51516560527. The reversal of 51516560507 is 70506561515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51516560507 - 2² = 51516560503 is a prime.

It is not a weakly prime, because it can be changed into another prime (51516560503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25758280253 + 25758280254.

It is an arithmetic number, because the mean of its divisors is an integer number (25758280254).

Almost surely, 2^51516560507 is an apocalyptic number.

51516560507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51516560507 is an equidigital number, since it uses as much as digits as its factorization.

51516560507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 51516560507 in words is "fifty-one billion, five hundred sixteen million, five hundred sixty thousand, five hundred seven".