18233676720 has 400 divisors, whose sum is σ = 74715598848. Its totient is φ = 4032944640.

The previous prime is 18233676707. The next prime is 18233676733. The reversal of 18233676720 is 2767633281.

18233676720 is a `hidden beast` number, since 182 + 336 + 76 + 72 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (18233676707) and next prime (18233676733).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1399677 + ... + 1412643.

Almost surely, 2^18233676720 is an apocalyptic number.

18233676720 is a gapful number since it is divisible by the number (10) 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 18233676720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37357799424).

18233676720 is an abundant number, since it is smaller than the sum of its proper divisors (56481922128).

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

18233676720 is a wasteful number, since it uses less digits than its factorization.

18233676720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13030 (or 13015 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 18233676720 in words is "eighteen billion, two hundred thirty-three million, six hundred seventy-six thousand, seven hundred twenty".