5209715864 has 32 divisors (see below), whose sum is σ = 9854460000. Its totient is φ = 2581934592.

The previous prime is 5209715843. The next prime is 5209715897. The reversal of 5209715864 is 4685179025.

It is a happy number.

It is a super-2 number, since 2×5209715864² = 54282278767226532992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595232 + ... + 603920.

It is an arithmetic number, because the mean of its divisors is an integer number (307951875).

Almost surely, 2^5209715864 is an apocalyptic number.

It is an amenable number.

5209715864 is a deficient number, since it is larger than the sum of its proper divisors (4644744136).

5209715864 is a wasteful number, since it uses less digits than its factorization.

5209715864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9347 (or 9343 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 5209715864 is about 72178.3614665781. The cubic root of 5209715864 is about 1733.5565472237.

The spelling of 5209715864 in words is "five billion, two hundred nine million, seven hundred fifteen thousand, eight hundred sixty-four".