27222157844 has 24 divisors (see below), whose sum is σ = 56200585728. Its totient is φ = 11290295520.

The previous prime is 27222157777. The next prime is 27222157849. The reversal of 27222157844 is 44875122272.

It is a happy number.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 27222157795 and 27222157804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27222157849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15680099 + ... + 15681834.

It is an arithmetic number, because the mean of its divisors is an integer number (2341691072).

Almost surely, 2^27222157844 is an apocalyptic number.

It is an amenable number.

27222157844 is an abundant number, since it is smaller than the sum of its proper divisors (28978427884).

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

27222157844 is a wasteful number, since it uses less digits than its factorization.

27222157844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31361975 (or 31361973 counting only the distinct ones).

The product of its digits is 501760, while the sum is 44.

The spelling of 27222157844 in words is "twenty-seven billion, two hundred twenty-two million, one hundred fifty-seven thousand, eight hundred forty-four".