22149945408 has 112 divisors (see below), whose sum is σ = 61032761856. Its totient is φ = 7081697280.

The previous prime is 22149945373. The next prime is 22149945421. The reversal of 22149945408 is 80454994122.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656110 + ... + 689042.

Almost surely, 2^22149945408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22149945408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30516380928).

22149945408 is an abundant number, since it is smaller than the sum of its proper divisors (38882816448).

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

22149945408 is a wasteful number, since it uses less digits than its factorization.

22149945408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33092 (or 33082 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 22149945408 in words is "twenty-two billion, one hundred forty-nine million, nine hundred forty-five thousand, four hundred eight".