6633138712 has 16 divisors (see below), whose sum is σ = 12439572840. Its totient is φ = 3315919296.

The previous prime is 6633138683. The next prime is 6633138713. The reversal of 6633138712 is 2178313366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6633138713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36438 + ... + 120805.

Almost surely, 2^6633138712 is an apocalyptic number.

It is an amenable number.

6633138712 is a deficient number, since it is larger than the sum of its proper divisors (5806434128).

6633138712 is a wasteful number, since it uses less digits than its factorization.

6633138712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162522 (or 162518 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 6633138712 is about 81444.0833455691. The cubic root of 6633138712 is about 1878.9116523980.

The spelling of 6633138712 in words is "six billion, six hundred thirty-three million, one hundred thirty-eight thousand, seven hundred twelve".