18633285072 has 120 divisors (see below), whose sum is σ = 54511907840. Its totient is φ = 5934539520.

The previous prime is 18633285049. The next prime is 18633285109. The reversal of 18633285072 is 27058233681.

18633285072 is a `hidden beast` number, since 1 + 8 + 633 + 2 + 8 + 5 + 0 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326238 + ... + 379074.

Almost surely, 2^18633285072 is an apocalyptic number.

18633285072 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 18633285072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27255953920).

18633285072 is an abundant number, since it is smaller than the sum of its proper divisors (35878622768).

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

18633285072 is a wasteful number, since it uses less digits than its factorization.

18633285072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52961 (or 52952 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 18633285072 in words is "eighteen billion, six hundred thirty-three million, two hundred eighty-five thousand, seventy-two".