22198458906 has 48 divisors (see below), whose sum is σ = 52126403784. Its totient is φ = 6786778752.

The previous prime is 22198458899. The next prime is 22198458911. The reversal of 22198458906 is 60985489122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16182129681 + 6016329225 = 127209^2 + 77565^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265381 + ... + 338856.

Almost surely, 2^22198458906 is an apocalyptic number.

22198458906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22198458906 is an abundant number, since it is smaller than the sum of its proper divisors (29927944878).

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

22198458906 is a wasteful number, since it uses less digits than its factorization.

22198458906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604415 (or 604412 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 22198458906 in words is "twenty-two billion, one hundred ninety-eight million, four hundred fifty-eight thousand, nine hundred six".