18772822863200 has 144 divisors (see below), whose sum is σ = 52466958087264. Its totient is φ = 6425240371200.

The previous prime is 18772822863173. The next prime is 18772822863247. The reversal of 18772822863200 is 236822827781.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 326270 + ... + 6136130.

It is an arithmetic number, because the mean of its divisors is an integer number (364353875606).

Almost surely, 2^{18772822863200} is an apocalyptic number.

18772822863200 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 18772822863200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26233479043632).

18772822863200 is an abundant number, since it is smaller than the sum of its proper divisors (33694135224064).

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

18772822863200 is a wasteful number, since it uses less digits than its factorization.

18772822863200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810465 (or 5810452 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 18772822863200 in words is "eighteen trillion, seven hundred seventy-two billion, eight hundred twenty-two million, eight hundred sixty-three thousand, two hundred".