18200835072 has 528 divisors, whose sum is σ = 65399193600. Its totient is φ = 4757667840.

The previous prime is 18200835067. The next prime is 18200835073. The reversal of 18200835072 is 27053800281.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18200835073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37997329 + ... + 37997807.

Almost surely, 2^18200835072 is an apocalyptic number.

18200835072 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 18200835072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32699596800).

18200835072 is an abundant number, since it is smaller than the sum of its proper divisors (47198358528).

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

18200835072 is a wasteful number, since it uses less digits than its factorization.

18200835072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 18200835072 in words is "eighteen billion, two hundred million, eight hundred thirty-five thousand, seventy-two".