18066674140 has 48 divisors (see below), whose sum is σ = 39275308800. Its totient is φ = 6973655040.

The previous prime is 18066674137. The next prime is 18066674141. The reversal of 18066674140 is 4147666081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18066674141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177586 + ... + 260134.

It is an arithmetic number, because the mean of its divisors is an integer number (818235600).

Almost surely, 2^18066674140 is an apocalyptic number.

18066674140 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 18066674140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19637654400).

18066674140 is an abundant number, since it is smaller than the sum of its proper divisors (21208634660).

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

18066674140 is a wasteful number, since it uses less digits than its factorization.

18066674140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82942 (or 82940 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 18066674140 in words is "eighteen billion, sixty-six million, six hundred seventy-four thousand, one hundred forty".