3999312780472 has 16 divisors (see below), whose sum is σ = 7504362358560. Its totient is φ = 1998149484864.

The previous prime is 3999312780451. The next prime is 3999312780481. The reversal of 3999312780472 is 2740872139993.

3999312780472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 188351893 + ... + 188373124.

It is an arithmetic number, because the mean of its divisors is an integer number (469022647410).

Almost surely, 2^{3999312780472} is an apocalyptic number.

It is an amenable number.

3999312780472 is a deficient number, since it is larger than the sum of its proper divisors (3505049578088).

3999312780472 is a wasteful number, since it uses less digits than its factorization.

3999312780472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376726350 (or 376726346 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 3999312780472 in words is "three trillion, nine hundred ninety-nine billion, three hundred twelve million, seven hundred eighty thousand, four hundred seventy-two".