21850158179118 has 16 divisors (see below), whose sum is σ = 43703243747280. Its totient is φ = 7282898161536.

The previous prime is 21850158179029. The next prime is 21850158179137. The reversal of 21850158179118 is 81197185105812.

It is a congruent number.

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, 121877505 + ... + 122056652.

It is an arithmetic number, because the mean of its divisors is an integer number (2731452734205).

Almost surely, 2^{21850158179118} is an apocalyptic number.

21850158179118 is an abundant number, since it is smaller than the sum of its proper divisors (21853085568162).

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

21850158179118 is a wasteful number, since it uses less digits than its factorization.

21850158179118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243949091.

The product of its (nonzero) digits is 1612800, while the sum is 57.

The spelling of 21850158179118 in words is "twenty-one trillion, eight hundred fifty billion, one hundred fifty-eight million, one hundred seventy-nine thousand, one hundred eighteen".