51365456315 has 4 divisors (see below), whose sum is σ = 61638547584. Its totient is φ = 41092365048.

The previous prime is 51365456291. The next prime is 51365456333.

It is a happy number.

51365456315 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51365456315 - 2¹⁰ = 51365455291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5136545627 + ... + 5136545636.

It is an arithmetic number, because the mean of its divisors is an integer number (15409636896).

Almost surely, 2^51365456315 is an apocalyptic number.

51365456315 is a deficient number, since it is larger than the sum of its proper divisors (10273091269).

51365456315 is a wasteful number, since it uses less digits than its factorization.

51365456315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10273091268.

The product of its digits is 810000, while the sum is 44.

Adding to 51365456315 its product of digits (810000), we get a palindrome (51366266315).

Subtracting from 51365456315 its product of digits (810000), we obtain a palindrome (51364646315).

The spelling of 51365456315 in words is "fifty-one billion, three hundred sixty-five million, four hundred fifty-six thousand, three hundred fifteen".