18111412680 has 128 divisors (see below), whose sum is σ = 55863319680. Its totient is φ = 4694077440.

The previous prime is 18111412679. The next prime is 18111412699. The reversal of 18111412680 is 8621411181.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5801520 + ... + 5804640.

It is an arithmetic number, because the mean of its divisors is an integer number (436432185).

Almost surely, 2^18111412680 is an apocalyptic number.

18111412680 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 18111412680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27931659840).

18111412680 is an abundant number, since it is smaller than the sum of its proper divisors (37751907000).

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

18111412680 is a wasteful number, since it uses less digits than its factorization.

18111412680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479 (or 4475 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 33.

The spelling of 18111412680 in words is "eighteen billion, one hundred eleven million, four hundred twelve thousand, six hundred eighty".