18797547888336 has 160 divisors (see below), whose sum is σ = 56593687772160. Its totient is φ = 5265682403328.

The previous prime is 18797547888307. The next prime is 18797547888359. The reversal of 18797547888336 is 63388874579781.

It is a super-5 number, since 5×18797547888336⁵ (a number of 68 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 792235 + ... + 6182453.

It is an arithmetic number, because the mean of its divisors is an integer number (353710548576).

Almost surely, 2^{18797547888336} is an apocalyptic number.

18797547888336 is a gapful number since it is divisible by the number (16) 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 18797547888336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28296843886080).

18797547888336 is an abundant number, since it is smaller than the sum of its proper divisors (37796139883824).

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

18797547888336 is a wasteful number, since it uses less digits than its factorization.

18797547888336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390441 (or 5390435 counting only the distinct ones).

The product of its digits is 13655900160, while the sum is 84.

The spelling of 18797547888336 in words is "eighteen trillion, seven hundred ninety-seven billion, five hundred forty-seven million, eight hundred eighty-eight thousand, three hundred thirty-six".