6663509912 has 64 divisors (see below), whose sum is σ = 13518943200. Its totient is φ = 3068789760.

The previous prime is 6663509903. The next prime is 6663509977. The reversal of 6663509912 is 2199053666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1973858 + ... + 1977230.

Almost surely, 2^6663509912 is an apocalyptic number.

It is an amenable number.

6663509912 is an abundant number, since it is smaller than the sum of its proper divisors (6855433288).

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

6663509912 is a wasteful number, since it uses less digits than its factorization.

6663509912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 3752 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 6663509912 is about 81630.3247084072. The cubic root of 6663509912 is about 1881.7749488746.

The spelling of 6663509912 in words is "six billion, six hundred sixty-three million, five hundred nine thousand, nine hundred twelve".