1640492925724 has 12 divisors (see below), whose sum is σ = 2878685136544. Its totient is φ = 818011458144.

The previous prime is 1640492925713. The next prime is 1640492925761. The reversal of 1640492925724 is 4275292940461.

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 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, 558749529 + ... + 558752464.

Almost surely, 2^{1640492925724} is an apocalyptic number.

It is an amenable number.

1640492925724 is a deficient number, since it is larger than the sum of its proper divisors (1238192210820).

1640492925724 is a wasteful number, since it uses less digits than its factorization.

1640492925724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117502364 (or 1117502362 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 1640492925724 in words is "one trillion, six hundred forty billion, four hundred ninety-two million, nine hundred twenty-five thousand, seven hundred twenty-four".