51845254815 has 16 divisors (see below), whose sum is σ = 84517548768. Its totient is φ = 27129088896.

The previous prime is 51845254789. The next prime is 51845254823.

51845254815 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51845254815 - 2²⁵ = 51811700383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32606284 + ... + 32607873.

It is an arithmetic number, because the mean of its divisors is an integer number (5282346798).

Almost surely, 2^51845254815 is an apocalyptic number.

51845254815 is a deficient number, since it is larger than the sum of its proper divisors (32672293953).

51845254815 is a wasteful number, since it uses less digits than its factorization.

51845254815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65214218.

The product of its digits is 1280000, while the sum is 48.

The spelling of 51845254815 in words is "fifty-one billion, eight hundred forty-five million, two hundred fifty-four thousand, eight hundred fifteen".