844142138224 has 60 divisors (see below), whose sum is σ = 2075509054008. Its totient is φ = 328886544000.

The previous prime is 844142138201. The next prime is 844142138227. The reversal of 844142138224 is 422831241448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844142138227) 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, 48932827 + ... + 48950074.

Almost surely, 2^844142138224 is an apocalyptic number.

It is an amenable number.

844142138224 is an abundant number, since it is smaller than the sum of its proper divisors (1231366915784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

844142138224 is a wasteful number, since it uses less digits than its factorization.

844142138224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97882934 (or 97882921 counting only the distinct ones).

The product of its digits is 393216, while the sum is 43.

The spelling of 844142138224 in words is "eight hundred forty-four billion, one hundred forty-two million, one hundred thirty-eight thousand, two hundred twenty-four".