18558140066136 has 256 divisors, whose sum is σ = 59550883776000. Its totient is φ = 5292336476160.

The previous prime is 18558140066113. The next prime is 18558140066201. The reversal of 18558140066136 is 63166004185581.

18558140066136 is a `hidden beast` number, since 1 + 8 + 5 + 5 + 8 + 14 + 0 + 0 + 6 + 613 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 569793660 + ... + 569826228.

It is an arithmetic number, because the mean of its divisors is an integer number (232620639750).

Almost surely, 2^{18558140066136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18558140066136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29775441888000).

18558140066136 is an abundant number, since it is smaller than the sum of its proper divisors (40992743709864).

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

18558140066136 is a wasteful number, since it uses less digits than its factorization.

18558140066136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46719 (or 46709 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 18558140066136 in words is "eighteen trillion, five hundred fifty-eight billion, one hundred forty million, sixty-six thousand, one hundred thirty-six".