22158858420 has 96 divisors (see below), whose sum is σ = 72993916800. Its totient is φ = 5561436672.

The previous prime is 22158858413. The next prime is 22158858461. The reversal of 22158858420 is 2485885122.

22158858420 is a `hidden beast` number, since 2 + 21 + 588 + 5 + 8 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1197730 + ... + 1216089.

It is an arithmetic number, because the mean of its divisors is an integer number (760353300).

Almost surely, 2^22158858420 is an apocalyptic number.

22158858420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22158858420 is an abundant number, since it is smaller than the sum of its proper divisors (50835058380).

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

22158858420 is a wasteful number, since it uses less digits than its factorization.

22158858420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413854 (or 2413846 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 45.

The spelling of 22158858420 in words is "twenty-two billion, one hundred fifty-eight million, eight hundred fifty-eight thousand, four hundred twenty".