18878444804800 has 336 divisors, whose sum is σ = 54982183200768. Its totient is φ = 6245658316800.

The previous prime is 18878444804789. The next prime is 18878444804801. The reversal of 18878444804800 is 840844487881.

It is a super-2 number, since 2×18878444804800² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is not an unprimeable number, because it can be changed into a prime (18878444804801) 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, 37121842 + ... + 37626958.

Almost surely, 2^{18878444804800} is an apocalyptic number.

18878444804800 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 18878444804800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27491091600384).

18878444804800 is an abundant number, since it is smaller than the sum of its proper divisors (36103738395968).

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

18878444804800 is a wasteful number, since it uses less digits than its factorization.

18878444804800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505264 (or 505249 counting only the distinct ones).

The product of its (nonzero) digits is 58720256, while the sum is 64.

The spelling of 18878444804800 in words is "eighteen trillion, eight hundred seventy-eight billion, four hundred forty-four million, eight hundred four thousand, eight hundred".