18623404800 has 2592 divisors, whose sum is σ = 99638622720. Its totient is φ = 3185049600.

The previous prime is 18623404763. The next prime is 18623404829. The reversal of 18623404800 is 840432681.

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

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 980179191 + ... + 980179209.

Almost surely, 2^18623404800 is an apocalyptic number.

18623404800 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 18623404800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49819311360).

18623404800 is an abundant number, since it is smaller than the sum of its proper divisors (81015217920).

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

18623404800 is a wasteful number, since it uses less digits than its factorization.

18623404800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 18623404800 in words is "eighteen billion, six hundred twenty-three million, four hundred four thousand, eight hundred".