1390392816564 has 12 divisors (see below), whose sum is σ = 3244249905344. Its totient is φ = 463464272184.

The previous prime is 1390392816539. The next prime is 1390392816577. The reversal of 1390392816564 is 4656182930931.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (57) 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, 57933034012 + ... + 57933034035.

Almost surely, 2^{1390392816564} is an apocalyptic number.

It is an amenable number.

1390392816564 is an abundant number, since it is smaller than the sum of its proper divisors (1853857088780).

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

1390392816564 is a wasteful number, since it uses less digits than its factorization.

1390392816564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115866068054 (or 115866068052 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 57.

The spelling of 1390392816564 in words is "one trillion, three hundred ninety billion, three hundred ninety-two million, eight hundred sixteen thousand, five hundred sixty-four".