157893841890564 has 96 divisors (see below), whose sum is σ = 409359932526720. Its totient is φ = 47056784716800.

The previous prime is 157893841890503. The next prime is 157893841890571. The reversal of 157893841890564 is 465098148398751.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a self number, because there is not a number n which added to its sum of digits gives 157893841890564.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87910747 + ... + 89688834.

It is an arithmetic number, because the mean of its divisors is an integer number (4264165963820).

Almost surely, 2^{157893841890564} is an apocalyptic number.

It is an amenable number.

157893841890564 is an abundant number, since it is smaller than the sum of its proper divisors (251466090636156).

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

157893841890564 is a wasteful number, since it uses less digits than its factorization.

157893841890564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177599781 (or 177599779 counting only the distinct ones).

The product of its (nonzero) digits is 2090188800, while the sum is 78.

The spelling of 157893841890564 in words is "one hundred fifty-seven trillion, eight hundred ninety-three billion, eight hundred forty-one million, eight hundred ninety thousand, five hundred sixty-four".