18097345880 has 64 divisors (see below), whose sum is σ = 42335002080. Its totient is φ = 6956928000.

The previous prime is 18097345867. The next prime is 18097345897. The reversal of 18097345880 is 8854379081.

It is a congruent number.

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, 27530 + ... + 192230.

Almost surely, 2^18097345880 is an apocalyptic number.

18097345880 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 18097345880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21167501040).

18097345880 is an abundant number, since it is smaller than the sum of its proper divisors (24237656200).

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

18097345880 is a wasteful number, since it uses less digits than its factorization.

18097345880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164820 (or 164816 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 18097345880 in words is "eighteen billion, ninety-seven million, three hundred forty-five thousand, eight hundred eighty".