18098876544 has 128 divisors (see below), whose sum is σ = 55477294080. Its totient is φ = 5120824320.

The previous prime is 18098876519. The next prime is 18098876603. The reversal of 18098876544 is 44567889081.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244179 + ... + 309549.

It is an arithmetic number, because the mean of its divisors is an integer number (433416360).

Almost surely, 2^18098876544 is an apocalyptic number.

18098876544 is a gapful number since it is divisible by the number (14) 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 18098876544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27738647040).

18098876544 is an abundant number, since it is smaller than the sum of its proper divisors (37378417536).

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

18098876544 is a wasteful number, since it uses less digits than its factorization.

18098876544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65498 (or 65486 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 60.

The spelling of 18098876544 in words is "eighteen billion, ninety-eight million, eight hundred seventy-six thousand, five hundred forty-four".