5215776813 has 32 divisors (see below), whose sum is σ = 8353255680. Its totient is φ = 3197448000.

The previous prime is 5215776809. The next prime is 5215776833. The reversal of 5215776813 is 3186775125.

It is a happy number.

5215776813 is a `hidden beast` number, since 5 + 2 + 1 + 577 + 68 + 13 = 666.

It is not a de Polignac number, because 5215776813 - 2² = 5215776809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215776803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64063 + ... + 120563.

It is an arithmetic number, because the mean of its divisors is an integer number (261039240).

Almost surely, 2^5215776813 is an apocalyptic number.

It is an amenable number.

5215776813 is a deficient number, since it is larger than the sum of its proper divisors (3137478867).

5215776813 is a wasteful number, since it uses less digits than its factorization.

5215776813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56786 (or 56780 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 5215776813 is about 72220.3351764584. The cubic root of 5215776813 is about 1734.2285560968.

The spelling of 5215776813 in words is "five billion, two hundred fifteen million, seven hundred seventy-six thousand, eight hundred thirteen".