18620800000 has 396 divisors, whose sum is σ = 53058682152. Its totient is φ = 6476800000.

The previous prime is 18620799971. The next prime is 18620800021. The reversal of 18620800000 is 802681.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 809599989 + ... + 809600011.

Almost surely, 2^18620800000 is an apocalyptic number.

18620800000 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 18620800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26529341076).

18620800000 is an abundant number, since it is smaller than the sum of its proper divisors (34437882152).

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

18620800000 is an frugal number, since it uses more digits than its factorization.

18620800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The spelling of 18620800000 in words is "eighteen billion, six hundred twenty million, eight hundred thousand".