51515666005651 has 8 divisors (see below), whose sum is σ = 51698697375744. Its totient is φ = 51332641658760.

The previous prime is 51515666005637. The next prime is 51515666005691. The reversal of 51515666005651 is 15650066651515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51515666005651 - 2¹³ = 51515665997459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51515666005691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13165230 + ... + 16623916.

It is an arithmetic number, because the mean of its divisors is an integer number (6462337171968).

Almost surely, 2^{51515666005651} is an apocalyptic number.

51515666005651 is a deficient number, since it is larger than the sum of its proper divisors (183031370093).

51515666005651 is a wasteful number, since it uses less digits than its factorization.

51515666005651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511601.

The product of its (nonzero) digits is 4050000, while the sum is 52.

The spelling of 51515666005651 in words is "fifty-one trillion, five hundred fifteen billion, six hundred sixty-six million, five thousand, six hundred fifty-one".