18797638298112 has 160 divisors (see below), whose sum is σ = 55891841026560. Its totient is φ = 6237780295680.

The previous prime is 18797638298053. The next prime is 18797638298123. The reversal of 18797638298112 is 21189283679781.

18797638298112 is a `hidden beast` number, since 1 + 87 + 9 + 76 + 382 + 98 + 1 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33912 + ... + 6131592.

It is an arithmetic number, because the mean of its divisors is an integer number (349324006416).

Almost surely, 2^{18797638298112} is an apocalyptic number.

18797638298112 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 18797638298112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27945920513280).

18797638298112 is an abundant number, since it is smaller than the sum of its proper divisors (37094202728448).

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

18797638298112 is an equidigital number, since it uses as much as digits as its factorization.

18797638298112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097931 (or 6097909 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 72.

The spelling of 18797638298112 in words is "eighteen trillion, seven hundred ninety-seven billion, six hundred thirty-eight million, two hundred ninety-eight thousand, one hundred twelve".