18156914641600 has 672 divisors, whose sum is σ = 56012486400000. Its totient is φ = 5771947991040.

The previous prime is 18156914641577. The next prime is 18156914641661. The reversal of 18156914641600 is 614641965181.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 490059876 + ... + 490096924.

Almost surely, 2^{18156914641600} is an apocalyptic number.

18156914641600 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 18156914641600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28006243200000).

18156914641600 is an abundant number, since it is smaller than the sum of its proper divisors (37855571758400).

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

18156914641600 is a wasteful number, since it uses less digits than its factorization.

18156914641600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37158 (or 37129 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 18156914641600 in words is "eighteen trillion, one hundred fifty-six billion, nine hundred fourteen million, six hundred forty-one thousand, six hundred".