10611707809 has 4 divisors (see below), whose sum is σ = 10623131460. Its totient is φ = 10600284160.

The previous prime is 10611707807. The next prime is 10611707831. The reversal of 10611707809 is 90870711601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 608707584 + 10003000225 = 24672^2 + 100015^2 .

It is a cyclic number.

It is not a de Polignac number, because 10611707809 - 2¹ = 10611707807 is a prime.

It is a super-2 number, since 2×10611707809² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10611707807) 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, 5710432 + ... + 5712289.

It is an arithmetic number, because the mean of its divisors is an integer number (2655782865).

Almost surely, 2^10611707809 is an apocalyptic number.

It is an amenable number.

10611707809 is a deficient number, since it is larger than the sum of its proper divisors (11423651).

10611707809 is an equidigital number, since it uses as much as digits as its factorization.

10611707809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11423650.

The product of its (nonzero) digits is 21168, while the sum is 40.

The spelling of 10611707809 in words is "ten billion, six hundred eleven million, seven hundred seven thousand, eight hundred nine".