10809137090 has 16 divisors (see below), whose sum is σ = 19930995000. Its totient is φ = 4218199680.

The previous prime is 10809137051. The next prime is 10809137093. The reversal of 10809137090 is 9073190801.

It is a Cunningham number, because it is equal to 103967²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 6259499689 + 4549637401 = 79117^2 + 67451^2 .

It is not an unprimeable number, because it can be changed into a prime (10809137093) 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, 13181465 + ... + 13182284.

Almost surely, 2^10809137090 is an apocalyptic number.

10809137090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10809137090 is a deficient number, since it is larger than the sum of its proper divisors (9121857910).

10809137090 is a wasteful number, since it uses less digits than its factorization.

10809137090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26363797.

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 10809137090 in words is "ten billion, eight hundred nine million, one hundred thirty-seven thousand, ninety".