3965631591304 has 32 divisors (see below), whose sum is σ = 7438540586400. Its totient is φ = 1982020967680.

The previous prime is 3965631591301. The next prime is 3965631591331. The reversal of 3965631591304 is 4031951365693.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3965631591301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380318139 + ... + 380328565.

It is an arithmetic number, because the mean of its divisors is an integer number (232454393325).

Almost surely, 2^{3965631591304} is an apocalyptic number.

It is an amenable number.

3965631591304 is a deficient number, since it is larger than the sum of its proper divisors (3472908995096).

3965631591304 is a wasteful number, since it uses less digits than its factorization.

3965631591304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24933 (or 24929 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 55.

The spelling of 3965631591304 in words is "three trillion, nine hundred sixty-five billion, six hundred thirty-one million, five hundred ninety-one thousand, three hundred four".