390897636765504 has 448 divisors, whose sum is σ = 1181846277586944. Its totient is φ = 112944142080000.

The previous prime is 390897636765487. The next prime is 390897636765553. The reversal of 390897636765504 is 405567636798093.

It is a self number, because there is not a number n which added to its sum of digits gives 390897636765504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7302785589 + ... + 7302839115.

Almost surely, 2^{390897636765504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390897636765504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590923138793472).

390897636765504 is an abundant number, since it is smaller than the sum of its proper divisors (790948640821440).

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

390897636765504 is a wasteful number, since it uses less digits than its factorization.

390897636765504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55226 (or 55216 counting only the distinct ones).

The product of its (nonzero) digits is 6172588800, while the sum is 78.

The spelling of 390897636765504 in words is "three hundred ninety trillion, eight hundred ninety-seven billion, six hundred thirty-six million, seven hundred sixty-five thousand, five hundred four".