51521164635115 has 64 divisors (see below), whose sum is σ = 71052379453440. Its totient is φ = 35132128496640.

The previous prime is 51521164635113. The next prime is 51521164635137. The reversal of 51521164635115 is 51153646112515.

It is not a de Polignac number, because 51521164635115 - 2¹ = 51521164635113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51521164635113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6776421904 + ... + 6776429506.

It is an arithmetic number, because the mean of its divisors is an integer number (1110193428960).

Almost surely, 2^{51521164635115} is an apocalyptic number.

51521164635115 is a deficient number, since it is larger than the sum of its proper divisors (19531214818325).

51521164635115 is a wasteful number, since it uses less digits than its factorization.

51521164635115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9452.

The product of its digits is 540000, while the sum is 46.

The spelling of 51521164635115 in words is "fifty-one trillion, five hundred twenty-one billion, one hundred sixty-four million, six hundred thirty-five thousand, one hundred fifteen".