27909190422 has 24 divisors (see below), whose sum is σ = 60475254840. Its totient is φ = 9302241600.

The previous prime is 27909190399. The next prime is 27909190451. The reversal of 27909190422 is 22409190972.

It is a super-2 number, since 2×27909190422² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 161854 + ... + 286382.

It is an arithmetic number, because the mean of its divisors is an integer number (2519802285).

Almost surely, 2^27909190422 is an apocalyptic number.

27909190422 is an abundant number, since it is smaller than the sum of its proper divisors (32566064418).

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

27909190422 is a wasteful number, since it uses less digits than its factorization.

27909190422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136988 (or 136985 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 27909190422 in words is "twenty-seven billion, nine hundred nine million, one hundred ninety thousand, four hundred twenty-two".