844222279824 has 120 divisors (see below), whose sum is σ = 2945641413312. Its totient is φ = 219278511360.

The previous prime is 844222279787. The next prime is 844222279841. The reversal of 844222279824 is 428972222448.

It is a happy number.

It is a super-2 number, since 2×844222279824² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38058099 + ... + 38080274.

Almost surely, 2^844222279824 is an apocalyptic number.

844222279824 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

844222279824 is an abundant number, since it is smaller than the sum of its proper divisors (2101419133488).

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

844222279824 is a wasteful number, since it uses less digits than its factorization.

844222279824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76138405 (or 76138396 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 54.

The spelling of 844222279824 in words is "eight hundred forty-four billion, two hundred twenty-two million, two hundred seventy-nine thousand, eight hundred twenty-four".