18164088880040 has 32 divisors (see below), whose sum is σ = 40869546696360. Its totient is φ = 7265573913600.

The previous prime is 18164088880031. The next prime is 18164088880079. The reversal of 18164088880040 is 4008888046181.

It can be written as a sum of positive squares in 4 ways, for example, as 12829162295524 + 5334926584516 = 3581782^2 + 2309746^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3003500 + ... + 6734180.

Almost surely, 2^{18164088880040} is an apocalyptic number.

18164088880040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18164088880040 is an abundant number, since it is smaller than the sum of its proper divisors (22705457816320).

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

18164088880040 is a wasteful number, since it uses less digits than its factorization.

18164088880040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852413 (or 3852409 counting only the distinct ones).

The product of its (nonzero) digits is 3145728, while the sum is 56.

The spelling of 18164088880040 in words is "eighteen trillion, one hundred sixty-four billion, eighty-eight million, eight hundred eighty thousand, forty".