22154554420 has 24 divisors (see below), whose sum is σ = 48973226400. Its totient is φ = 8395409952.

The previous prime is 22154554403. The next prime is 22154554421. The reversal of 22154554420 is 2445545122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154554421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29150350 + ... + 29151109.

It is an arithmetic number, because the mean of its divisors is an integer number (2040551100).

Almost surely, 2^22154554420 is an apocalyptic number.

22154554420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22154554420 is an abundant number, since it is smaller than the sum of its proper divisors (26818671980).

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

22154554420 is a wasteful number, since it uses less digits than its factorization.

22154554420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58301487 (or 58301485 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

The spelling of 22154554420 in words is "twenty-two billion, one hundred fifty-four million, five hundred fifty-four thousand, four hundred twenty".