27972122184 has 192 divisors, whose sum is σ = 81537580800. Its totient is φ = 8631687168.

The previous prime is 27972122179. The next prime is 27972122197. The reversal of 27972122184 is 48122127972.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42836002 + ... + 42836654.

It is an arithmetic number, because the mean of its divisors is an integer number (424674900).

Almost surely, 2^27972122184 is an apocalyptic number.

27972122184 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27972122184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40768790400).

27972122184 is an abundant number, since it is smaller than the sum of its proper divisors (53565458616).

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

27972122184 is a wasteful number, since it uses less digits than its factorization.

27972122184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1197 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The spelling of 27972122184 in words is "twenty-seven billion, nine hundred seventy-two million, one hundred twenty-two thousand, one hundred eighty-four".