10609569661 has 8 divisors (see below), whose sum is σ = 11333076984. Its totient is φ = 9897108480.

The previous prime is 10609569653. The next prime is 10609569671. The reversal of 10609569661 is 16696590601.

It can be written as a sum of positive squares in 4 ways, for example, as 3363304036 + 7246265625 = 57994^2 + 85125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10609569661 - 2³ = 10609569653 is a prime.

It is a super-2 number, since 2×10609569661² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10609569671) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2759550 + ... + 2763391.

It is an arithmetic number, because the mean of its divisors is an integer number (1416634623).

Almost surely, 2^10609569661 is an apocalyptic number.

It is an amenable number.

10609569661 is a deficient number, since it is larger than the sum of its proper divisors (723507323).

10609569661 is a wasteful number, since it uses less digits than its factorization.

10609569661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523071.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 10609569661 in words is "ten billion, six hundred nine million, five hundred sixty-nine thousand, six hundred sixty-one".