6637947012 has 36 divisors (see below), whose sum is σ = 17029697776. Its totient is φ = 2179623600.

The previous prime is 6637946957. The next prime is 6637947031. The reversal of 6637947012 is 2107497366.

6637947012 is a `hidden beast` number, since 6 + 637 + 9 + 4 + 7 + 0 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1373614 + ... + 1378437.

Almost surely, 2^6637947012 is an apocalyptic number.

It is an amenable number.

6637947012 is an abundant number, since it is smaller than the sum of its proper divisors (10391750764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6637947012 is a wasteful number, since it uses less digits than its factorization.

6637947012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752128 (or 2752123 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 6637947012 is about 81473.5970238212. The cubic root of 6637947012 is about 1879.3655445493.

The spelling of 6637947012 in words is "six billion, six hundred thirty-seven million, nine hundred forty-seven thousand, twelve".