51000606157515 has 64 divisors (see below), whose sum is σ = 94213232593920. Its totient is φ = 23076269314560.

The previous prime is 51000606157511. The next prime is 51000606157591. The reversal of 51000606157515 is 51575160600015.

It is not a de Polignac number, because 51000606157515 - 2² = 51000606157511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51000606157511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8485645 + ... + 13191185.

It is an arithmetic number, because the mean of its divisors is an integer number (1472081759280).

Almost surely, 2^{51000606157515} is an apocalyptic number.

51000606157515 is a deficient number, since it is larger than the sum of its proper divisors (43212626436405).

51000606157515 is a wasteful number, since it uses less digits than its factorization.

51000606157515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706612.

The product of its (nonzero) digits is 157500, while the sum is 42.

The spelling of 51000606157515 in words is "fifty-one trillion, six hundred six million, one hundred fifty-seven thousand, five hundred fifteen".