844426111893 has 96 divisors (see below), whose sum is σ = 1525216863744. Its totient is φ = 410290771968.

The previous prime is 844426111831. The next prime is 844426111901. The reversal of 844426111893 is 398111624448.

It is not a de Polignac number, because 844426111893 - 2⁹ = 844426111381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844426111813) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1250371 + ... + 1803407.

It is an arithmetic number, because the mean of its divisors is an integer number (15887675664).

Almost surely, 2^844426111893 is an apocalyptic number.

It is an amenable number.

844426111893 is a deficient number, since it is larger than the sum of its proper divisors (680790751851).

844426111893 is a wasteful number, since it uses less digits than its factorization.

844426111893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553131 (or 553124 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The spelling of 844426111893 in words is "eight hundred forty-four billion, four hundred twenty-six million, one hundred eleven thousand, eight hundred ninety-three".