398612157564 has 24 divisors (see below), whose sum is σ = 930186407808. Its totient is φ = 132857665840.

The previous prime is 398612157553. The next prime is 398612157613. The reversal of 398612157564 is 465751216893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1504032 + ... + 1749095.

It is an arithmetic number, because the mean of its divisors is an integer number (38757766992).

Almost surely, 2^398612157564 is an apocalyptic number.

It is an amenable number.

398612157564 is an abundant number, since it is smaller than the sum of its proper divisors (531574250244).

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

398612157564 is a wasteful number, since it uses less digits than its factorization.

398612157564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263345 (or 3263343 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 57.

The spelling of 398612157564 in words is "three hundred ninety-eight billion, six hundred twelve million, one hundred fifty-seven thousand, five hundred sixty-four".