18044552232 has 120 divisors (see below), whose sum is σ = 57012926490. Its totient is φ = 5155536960.

The previous prime is 18044552213. The next prime is 18044552269. The reversal of 18044552232 is 23225544081.

18044552232 is a `hidden beast` number, since 1 + 80 + 4 + 4 + 552 + 23 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13898995236 + 4145556996 = 117894^2 + 64386^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 120682 + ... + 225062.

Almost surely, 2^18044552232 is an apocalyptic number.

18044552232 is a gapful number since it is divisible by the number (12) 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 18044552232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28506463245).

18044552232 is an abundant number, since it is smaller than the sum of its proper divisors (38968374258).

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

18044552232 is a wasteful number, since it uses less digits than its factorization.

18044552232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104421 (or 104393 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 18044552232 in words is "eighteen billion, forty-four million, five hundred fifty-two thousand, two hundred thirty-two".