872267036181 has 12 divisors (see below), whose sum is σ = 1215787452768. Its totient is φ = 556228253944.

The previous prime is 872267036177. The next prime is 872267036197. The reversal of 872267036181 is 181630762278.

872267036181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 872267036181 - 2² = 872267036177 is a prime.

It is a super-2 number, since 2×872267036181² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872267036141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274814745 + ... + 274817918.

It is an arithmetic number, because the mean of its divisors is an integer number (101315621064).

Almost surely, 2^872267036181 is an apocalyptic number.

It is an amenable number.

872267036181 is a deficient number, since it is larger than the sum of its proper divisors (343520416587).

872267036181 is a wasteful number, since it uses less digits than its factorization.

872267036181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549632712 (or 549632689 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 872267036181 in words is "eight hundred seventy-two billion, two hundred sixty-seven million, thirty-six thousand, one hundred eighty-one".