18889860648960 has 1040 divisors, whose sum is σ = 77709318648192. Its totient is φ = 4299816960000.

The previous prime is 18889860648949. The next prime is 18889860648979. The reversal of 18889860648960 is 6984606898881.

18889860648960 is a `hidden beast` number, since 18 + 8 + 8 + 9 + 8 + 60 + 6 + 489 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 18889860648960.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2914648920 + ... + 2914655400.

Almost surely, 2^{18889860648960} is an apocalyptic number.

18889860648960 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 18889860648960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38854659324096).

18889860648960 is an abundant number, since it is smaller than the sum of its proper divisors (58819457999232).

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

18889860648960 is an equidigital number, since it uses as much as digits as its factorization.

18889860648960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6780 (or 6749 counting only the distinct ones).

The product of its (nonzero) digits is 2293235712, while the sum is 81.

The spelling of 18889860648960 in words is "eighteen trillion, eight hundred eighty-nine billion, eight hundred sixty million, six hundred forty-eight thousand, nine hundred sixty".