22153705420 has 96 divisors (see below), whose sum is σ = 58819654656. Its totient is φ = 6807763200.

The previous prime is 22153705417. The next prime is 22153705477. The reversal of 22153705420 is 2450735122.

It is a super-2 number, since 2×22153705420² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8034 + ... + 210646.

It is an arithmetic number, because the mean of its divisors is an integer number (612704736).

Almost surely, 2^22153705420 is an apocalyptic number.

22153705420 is a gapful number since it is divisible by the number (20) 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 22153705420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29409827328).

22153705420 is an abundant number, since it is smaller than the sum of its proper divisors (36665949236).

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

22153705420 is a wasteful number, since it uses less digits than its factorization.

22153705420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202711 (or 202709 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The spelling of 22153705420 in words is "twenty-two billion, one hundred fifty-three million, seven hundred five thousand, four hundred twenty".