855781632159 has 8 divisors (see below), whose sum is σ = 1141084858032. Its totient is φ = 570499747200.

The previous prime is 855781632143. The next prime is 855781632191. The reversal of 855781632159 is 951236187558.

855781632159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 855781632159 - 2⁴ = 855781632143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855781630159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5241424 + ... + 5402229.

It is an arithmetic number, because the mean of its divisors is an integer number (142635607254).

Almost surely, 2^855781632159 is an apocalyptic number.

855781632159 is a deficient number, since it is larger than the sum of its proper divisors (285303225873).

855781632159 is a wasteful number, since it uses less digits than its factorization.

855781632159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10670457.

The product of its digits is 18144000, while the sum is 60.

The spelling of 855781632159 in words is "eight hundred fifty-five billion, seven hundred eighty-one million, six hundred thirty-two thousand, one hundred fifty-nine".