18907442669136 has 160 divisors (see below), whose sum is σ = 57626252763136. Its totient is φ = 5227540416000.

The previous prime is 18907442669131. The next prime is 18907442669191. The reversal of 18907442669136 is 63196624470981.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18907442669131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203388426 + ... + 203481366.

Almost surely, 2^{18907442669136} is an apocalyptic number.

18907442669136 is a gapful number since it is divisible by the number (16) 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 18907442669136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28813126381568).

18907442669136 is an abundant number, since it is smaller than the sum of its proper divisors (38718810094000).

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

18907442669136 is a wasteful number, since it uses less digits than its factorization.

18907442669136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112521 (or 112515 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 66.

The spelling of 18907442669136 in words is "eighteen trillion, nine hundred seven billion, four hundred forty-two million, six hundred sixty-nine thousand, one hundred thirty-six".