3811323857644 has 12 divisors (see below), whose sum is σ = 6687698299744. Its totient is φ = 1900552914864.

The previous prime is 3811323857617. The next prime is 3811323857711. The reversal of 3811323857644 is 4467583231183.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

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, 1277251812 + ... + 1277254795.

Almost surely, 2^{3811323857644} is an apocalyptic number.

It is an amenable number.

3811323857644 is a deficient number, since it is larger than the sum of its proper divisors (2876374442100).

3811323857644 is a wasteful number, since it uses less digits than its factorization.

3811323857644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554506984 (or 2554506982 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 55.

The spelling of 3811323857644 in words is "three trillion, eight hundred eleven billion, three hundred twenty-three million, eight hundred fifty-seven thousand, six hundred forty-four".