10909807187 has 4 divisors (see below), whose sum is σ = 10921551720. Its totient is φ = 10898062656.

The previous prime is 10909807151. The next prime is 10909807211. The reversal of 10909807187 is 78170890901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78170890901 = 23 ⋅3398734387.

It is a cyclic number.

It is not a de Polignac number, because 10909807187 - 2⁶ = 10909807123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10909807127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5870873 + ... + 5872730.

It is an arithmetic number, because the mean of its divisors is an integer number (2730387930).

Almost surely, 2^10909807187 is an apocalyptic number.

10909807187 is a deficient number, since it is larger than the sum of its proper divisors (11744533).

10909807187 is an equidigital number, since it uses as much as digits as its factorization.

10909807187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11744532.

The product of its (nonzero) digits is 254016, while the sum is 50.

The spelling of 10909807187 in words is "ten billion, nine hundred nine million, eight hundred seven thousand, one hundred eighty-seven".