18986260446720 has 1920 divisors, whose sum is σ = 81889142759424. Its totient is φ = 4122019528704.

The previous prime is 18986260446709. The next prime is 18986260446733. The reversal of 18986260446720 is 2764406268981.

18986260446720 is a `hidden beast` number, since 1 + 8 + 9 + 8 + 62 + 60 + 446 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 16325244859 + ... + 16325246021.

Almost surely, 2^{18986260446720} is an apocalyptic number.

18986260446720 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 18986260446720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40944571379712).

18986260446720 is an abundant number, since it is smaller than the sum of its proper divisors (62902882312704).

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

18986260446720 is a wasteful number, since it uses less digits than its factorization.

18986260446720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 63.

The spelling of 18986260446720 in words is "eighteen trillion, nine hundred eighty-six billion, two hundred sixty million, four hundred forty-six thousand, seven hundred twenty".