18706320452232 has 256 divisors, whose sum is σ = 60038092800000. Its totient is φ = 5285972514816.

The previous prime is 18706320452221. The next prime is 18706320452249. The reversal of 18706320452232 is 23225402360781.

18706320452232 is a `hidden beast` number, since 1 + 8 + 7 + 0 + 632 + 0 + 4 + 5 + 2 + 2 + 3 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 219806793 + ... + 219891879.

It is an arithmetic number, because the mean of its divisors is an integer number (234523800000).

Almost surely, 2^{18706320452232} is an apocalyptic number.

18706320452232 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 18706320452232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30019046400000).

18706320452232 is an abundant number, since it is smaller than the sum of its proper divisors (41331772347768).

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

18706320452232 is a wasteful number, since it uses less digits than its factorization.

18706320452232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86705 (or 86695 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 18706320452232 in words is "eighteen trillion, seven hundred six billion, three hundred twenty million, four hundred fifty-two thousand, two hundred thirty-two".