2166142345158 has 64 divisors (see below), whose sum is σ = 4817120585472. Its totient is φ = 643778378880.

The previous prime is 2166142345153. The next prime is 2166142345243. The reversal of 2166142345158 is 8515432416612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166142345153) 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, 9248485 + ... + 9479807.

It is an arithmetic number, because the mean of its divisors is an integer number (75267509148).

Almost surely, 2^{2166142345158} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166142345158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2408560292736).

2166142345158 is an abundant number, since it is smaller than the sum of its proper divisors (2650978240314).

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

2166142345158 is a wasteful number, since it uses less digits than its factorization.

2166142345158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234069.

The product of its digits is 1382400, while the sum is 48.

The spelling of 2166142345158 in words is "two trillion, one hundred sixty-six billion, one hundred forty-two million, three hundred forty-five thousand, one hundred fifty-eight".