22118979258 has 96 divisors (see below), whose sum is σ = 50825750976. Its totient is φ = 7207792128.

The previous prime is 22118979193. The next prime is 22118979263. The reversal of 22118979258 is 85297981122.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3909960 + ... + 3915612.

It is an arithmetic number, because the mean of its divisors is an integer number (529434906).

Almost surely, 2^22118979258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22118979258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25412875488).

22118979258 is an abundant number, since it is smaller than the sum of its proper divisors (28706771718).

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

22118979258 is an equidigital number, since it uses as much as digits as its factorization.

22118979258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850 (or 5838 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The spelling of 22118979258 in words is "twenty-two billion, one hundred eighteen million, nine hundred seventy-nine thousand, two hundred fifty-eight".