3921119665564 has 12 divisors (see below), whose sum is σ = 6894480550888. Its totient is φ = 1951268079600.

The previous prime is 3921119665559. The next prime is 3921119665667. The reversal of 3921119665564 is 4655669111293.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3921119665499 and 3921119665508.

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, 2322937347 + ... + 2322939034.

Almost surely, 2^{3921119665564} is an apocalyptic number.

It is an amenable number.

3921119665564 is a deficient number, since it is larger than the sum of its proper divisors (2973360885324).

3921119665564 is a wasteful number, since it uses less digits than its factorization.

3921119665564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645876596 (or 4645876594 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 58.

The spelling of 3921119665564 in words is "three trillion, nine hundred twenty-one billion, one hundred nineteen million, six hundred sixty-five thousand, five hundred sixty-four".