18713597486220 has 432 divisors, whose sum is σ = 72765449396640. Its totient is φ = 3856540004352.

The previous prime is 18713597486203. The next prime is 18713597486237. The reversal of 18713597486220 is 2268479531781.

18713597486220 is a `hidden beast` number, since 1 + 8 + 7 + 13 + 597 + 4 + 8 + 6 + 2 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (18713597486203) and next prime (18713597486237).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3032596 + ... + 6828164.

It is an arithmetic number, because the mean of its divisors is an integer number (168438540270).

It is a 1-persistent number, because it is pandigital, but 2⋅18713597486220 = 37427194972440 is not.

Almost surely, 2^{18713597486220} is an apocalyptic number.

18713597486220 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 18713597486220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36382724698320).

18713597486220 is an abundant number, since it is smaller than the sum of its proper divisors (54051851910420).

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

18713597486220 is a wasteful number, since it uses less digits than its factorization.

18713597486220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795654 (or 3795642 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 18713597486220 in words is "eighteen trillion, seven hundred thirteen billion, five hundred ninety-seven million, four hundred eighty-six thousand, two hundred twenty".