1390338923664 has 20 divisors (see below), whose sum is σ = 3591708886256. Its totient is φ = 463446307872.

The previous prime is 1390338923653. The next prime is 1390338923671. The reversal of 1390338923664 is 4663298330931.

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, 14482697074 + ... + 14482697169.

Almost surely, 2^{1390338923664} is an apocalyptic number.

It is an amenable number.

1390338923664 is an abundant number, since it is smaller than the sum of its proper divisors (2201369962592).

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

1390338923664 is a wasteful number, since it uses less digits than its factorization.

1390338923664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28965394254 (or 28965394248 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 57.

The spelling of 1390338923664 in words is "one trillion, three hundred ninety billion, three hundred thirty-eight million, nine hundred twenty-three thousand, six hundred sixty-four".