18111587540700 has 144 divisors (see below), whose sum is σ = 53482125674880. Its totient is φ = 4731090650880.

The previous prime is 18111587540693. The next prime is 18111587540731. The reversal of 18111587540700 is 704578511181.

It is a self number, because there is not a number n which added to its sum of digits gives 18111587540700.

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, 1080934 + ... + 6114866.

It is an arithmetic number, because the mean of its divisors is an integer number (371403650520).

Almost surely, 2^{18111587540700} is an apocalyptic number.

18111587540700 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 18111587540700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26741062837440).

18111587540700 is an abundant number, since it is smaller than the sum of its proper divisors (35370538134180).

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

18111587540700 is a wasteful number, since it uses less digits than its factorization.

18111587540700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034196 (or 5034189 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 48.

The spelling of 18111587540700 in words is "eighteen trillion, one hundred eleven billion, five hundred eighty-seven million, five hundred forty thousand, seven hundred".