18898766099136 has 1344 divisors, whose sum is σ = 73231975618560. Its totient is φ = 4722380974080.

The previous prime is 18898766099119. The next prime is 18898766099197. The reversal of 18898766099136 is 63199066789881.

It is a tau number, because it is divible by the number of its divisors (1344).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2683336831 + ... + 2683343873.

Almost surely, 2^{18898766099136} is an apocalyptic number.

18898766099136 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 18898766099136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36615987809280).

18898766099136 is an abundant number, since it is smaller than the sum of its proper divisors (54333209519424).

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

18898766099136 is a wasteful number, since it uses less digits than its factorization.

18898766099136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199 (or 7176 counting only the distinct ones).

The product of its (nonzero) digits is 1693052928, while the sum is 81.

The spelling of 18898766099136 in words is "eighteen trillion, eight hundred ninety-eight billion, seven hundred sixty-six million, ninety-nine thousand, one hundred thirty-six".