6637016812 has 12 divisors (see below), whose sum is σ = 11621328040. Its totient is φ = 3316637376.

The previous prime is 6637016779. The next prime is 6637016831. The reversal of 6637016812 is 2186107366.

It is a happy 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, 459762 + ... + 473977.

Almost surely, 2^6637016812 is an apocalyptic number.

It is an amenable number.

6637016812 is a deficient number, since it is larger than the sum of its proper divisors (4984311228).

6637016812 is a wasteful number, since it uses less digits than its factorization.

6637016812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935520 (or 935518 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 6637016812 is about 81467.8882259753. Note that the first 3 decimals coincide. The cubic root of 6637016812 is about 1879.2777529730.

The spelling of 6637016812 in words is "six billion, six hundred thirty-seven million, sixteen thousand, eight hundred twelve".