22200394491 has 16 divisors (see below), whose sum is σ = 35879425920. Its totient is φ = 13454784360.

The previous prime is 22200394487. The next prime is 22200394499. The reversal of 22200394491 is 19449300222.

22200394491 is a `hidden beast` number, since 2 + 2 + 200 + 3 + 9 + 449 + 1 = 666.

It is not a de Polignac number, because 22200394491 - 2² = 22200394487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22200394499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37374105 + ... + 37374698.

It is an arithmetic number, because the mean of its divisors is an integer number (2242464120).

Almost surely, 2^22200394491 is an apocalyptic number.

22200394491 is a deficient number, since it is larger than the sum of its proper divisors (13679031429).

22200394491 is a wasteful number, since it uses less digits than its factorization.

22200394491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74748823 (or 74748817 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 22200394491 in words is "twenty-two billion, two hundred million, three hundred ninety-four thousand, four hundred ninety-one".