32157742655 has 4 divisors (see below), whose sum is σ = 38589291192. Its totient is φ = 25726194120.

The previous prime is 32157742577. The next prime is 32157742681. The reversal of 32157742655 is 55624775123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55624775123 = 30697 ⋅1812059.

It is not a de Polignac number, because 32157742655 - 2²⁰ = 32156694079 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3215774261 + ... + 3215774270.

It is an arithmetic number, because the mean of its divisors is an integer number (9647322798).

Almost surely, 2^32157742655 is an apocalyptic number.

32157742655 is a deficient number, since it is larger than the sum of its proper divisors (6431548537).

32157742655 is an equidigital number, since it uses as much as digits as its factorization.

32157742655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6431548536.

The product of its digits is 1764000, while the sum is 47.

The spelling of 32157742655 in words is "thirty-two billion, one hundred fifty-seven million, seven hundred forty-two thousand, six hundred fifty-five".