3921140564892 has 36 divisors (see below), whose sum is σ = 9913496593000. Its totient is φ = 1306819433952.

The previous prime is 3921140564863. The next prime is 3921140564897. The reversal of 3921140564892 is 2984650411293.

It is a happy number.

3921140564892 is a `hidden beast` number, since 3 + 92 + 1 + 1 + 405 + 64 + 8 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921140564897) 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, 9266038 + ... + 9679965.

Almost surely, 2^{3921140564892} is an apocalyptic number.

It is an amenable number.

3921140564892 is an abundant number, since it is smaller than the sum of its proper divisors (5992356028108).

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

3921140564892 is a wasteful number, since it uses less digits than its factorization.

3921140564892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18951762 (or 18951757 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 3921140564892 in words is "three trillion, nine hundred twenty-one billion, one hundred forty million, five hundred sixty-four thousand, eight hundred ninety-two".