3995313919920 has 120 divisors (see below), whose sum is σ = 13469805082656. Its totient is φ = 1061271404544.

The previous prime is 3995313919913. The next prime is 3995313919951. The reversal of 3995313919920 is 299193135993.

3995313919920 is a `hidden beast` number, since 3 + 9 + 9 + 531 + 3 + 9 + 1 + 9 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10610772 + ... + 10980851.

Almost surely, 2^{3995313919920} is an apocalyptic number.

3995313919920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3995313919920 is an abundant number, since it is smaller than the sum of its proper divisors (9474491162736).

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

3995313919920 is a wasteful number, since it uses less digits than its factorization.

3995313919920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21591899 (or 21591890 counting only the distinct ones).

The product of its (nonzero) digits is 15943230, while the sum is 63.

The spelling of 3995313919920 in words is "three trillion, nine hundred ninety-five billion, three hundred thirteen million, nine hundred nineteen thousand, nine hundred twenty".