18896580771840 has 912 divisors, whose sum is σ = 68885775329280. Its totient is φ = 4968677376000.

The previous prime is 18896580771839. The next prime is 18896580771881. The reversal of 18896580771840 is 4817708569881.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25161891465 + ... + 25161892215.

Almost surely, 2^{18896580771840} is an apocalyptic number.

18896580771840 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 18896580771840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34442887664640).

18896580771840 is an abundant number, since it is smaller than the sum of its proper divisors (49989194557440).

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

18896580771840 is an frugal number, since it uses more digits than its factorization.

18896580771840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 216760320, while the sum is 72.

The spelling of 18896580771840 in words is "eighteen trillion, eight hundred ninety-six billion, five hundred eighty million, seven hundred seventy-one thousand, eight hundred forty".