3999633652896 has 192 divisors, whose sum is σ = 12813066362880. Its totient is φ = 1067755207680.

The previous prime is 3999633652879. The next prime is 3999633652909. The reversal of 3999633652896 is 6982563369993.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2706126 + ... + 3914381.

It is an arithmetic number, because the mean of its divisors is an integer number (66734720640).

Almost surely, 2^{3999633652896} is an apocalyptic number.

It is an amenable number.

3999633652896 is an abundant number, since it is smaller than the sum of its proper divisors (8813432709984).

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

3999633652896 is a wasteful number, since it uses less digits than its factorization.

3999633652896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620587 (or 6620579 counting only the distinct ones).

The product of its digits is 3061100160, while the sum is 78.

The spelling of 3999633652896 in words is "three trillion, nine hundred ninety-nine billion, six hundred thirty-three million, six hundred fifty-two thousand, eight hundred ninety-six".