157864573665 has 96 divisors (see below), whose sum is σ = 282429987840. Its totient is φ = 81524620800.

The previous prime is 157864573651. The next prime is 157864573733. The reversal of 157864573665 is 566375468751.

157864573665 is a `hidden beast` number, since 1 + 57 + 8 + 6 + 4 + 573 + 6 + 6 + 5 = 666.

It is not a de Polignac number, because 157864573665 - 2²⁵ = 157831019233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 167762095 + ... + 167763035.

It is an arithmetic number, because the mean of its divisors is an integer number (2941979040).

Almost surely, 2^157864573665 is an apocalyptic number.

157864573665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157864573665 is a deficient number, since it is larger than the sum of its proper divisors (124565414175).

157864573665 is a wasteful number, since it uses less digits than its factorization.

157864573665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655 (or 1652 counting only the distinct ones).

The product of its digits is 127008000, while the sum is 63.

The spelling of 157864573665 in words is "one hundred fifty-seven billion, eight hundred sixty-four million, five hundred seventy-three thousand, six hundred sixty-five".