872889131643 has 4 divisors (see below), whose sum is σ = 1163852175528. Its totient is φ = 581926087760.

The previous prime is 872889131629. The next prime is 872889131651. The reversal of 872889131643 is 346131988278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 872889131643 - 2²⁵ = 872855577211 is a prime.

It is a super-2 number, since 2×872889131643² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872889131623) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 145481521938 + ... + 145481521943.

It is an arithmetic number, because the mean of its divisors is an integer number (290963043882).

Almost surely, 2^872889131643 is an apocalyptic number.

872889131643 is a deficient number, since it is larger than the sum of its proper divisors (290963043885).

872889131643 is a wasteful number, since it uses less digits than its factorization.

872889131643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290963043884.

The product of its digits is 13934592, while the sum is 60.

The spelling of 872889131643 in words is "eight hundred seventy-two billion, eight hundred eighty-nine million, one hundred thirty-one thousand, six hundred forty-three".