18479711232 has 132 divisors (see below), whose sum is σ = 53435845996. Its totient is φ = 6151127040.

The previous prime is 18479711213. The next prime is 18479711269. The reversal of 18479711232 is 23211797481.

It can be written as a sum of positive squares in 2 ways, for example, as 14079246336 + 4400464896 = 118656^2 + 66336^2 .

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 11 ways as a sum of consecutive naturals, for example, 11399382 + ... + 11401002.

Almost surely, 2^18479711232 is an apocalyptic number.

18479711232 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 18479711232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26717922998).

18479711232 is an abundant number, since it is smaller than the sum of its proper divisors (34956134764).

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

18479711232 is a wasteful number, since it uses less digits than its factorization.

18479711232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884 (or 2863 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The spelling of 18479711232 in words is "eighteen billion, four hundred seventy-nine million, seven hundred eleven thousand, two hundred thirty-two".