3913663653864 has 48 divisors (see below), whose sum is σ = 10599871857120. Its totient is φ = 1304509489440.

The previous prime is 3913663653863. The next prime is 3913663653883. The reversal of 3913663653864 is 4683563663193.

It is a happy number.

3913663653864 is a `hidden beast` number, since 3 + 9 + 1 + 3 + 6 + 6 + 36 + 538 + 64 = 666.

It is a super-2 number, since 2×3913663653864² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3913663653863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1193509 + ... + 3041675.

It is an arithmetic number, because the mean of its divisors is an integer number (220830663690).

Almost surely, 2^{3913663653864} is an apocalyptic number.

It is an amenable number.

3913663653864 is an abundant number, since it is smaller than the sum of its proper divisors (6686208203256).

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

3913663653864 is a wasteful number, since it uses less digits than its factorization.

3913663653864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877590 (or 1877583 counting only the distinct ones).

The product of its digits is 151165440, while the sum is 63.

The spelling of 3913663653864 in words is "three trillion, nine hundred thirteen billion, six hundred sixty-three million, six hundred fifty-three thousand, eight hundred sixty-four".