10110905809 has 9 divisors (see below), whose sum is σ = 10183110609. Its totient is φ = 10039211520.

The previous prime is 10110905801. The next prime is 10110905821. The reversal of 10110905809 is 90850901101.

The square root of 10110905809 is 100553.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2248182225 + 7862723584 = 47415^2 + 88672^2 .

It is not a de Polignac number, because 10110905809 - 2³ = 10110905801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10110905801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19406469 + ... + 19406989.

Almost surely, 2^10110905809 is an apocalyptic number.

10110905809 is the 100553-rd square number.

10110905809 is the 50277-th centered octagonal number.

It is an amenable number.

10110905809 is a deficient number, since it is larger than the sum of its proper divisors (72204800).

10110905809 is an frugal number, since it uses more digits than its factorization.

10110905809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 34.

The spelling of 10110905809 in words is "ten billion, one hundred ten million, nine hundred five thousand, eight hundred nine".