10653800561 has 4 divisors (see below), whose sum is σ = 10691714724. Its totient is φ = 10615886400.

The previous prime is 10653800519. The next prime is 10653800579. The reversal of 10653800561 is 16500835601.

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 8373165025 + 2280635536 = 91505^2 + 47756^2 .

It is a cyclic number.

It is not a de Polignac number, because 10653800561 - 2¹⁰ = 10653799537 is a prime.

It is a super-2 number, since 2×10653800561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10653803561) 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, 18956660 + ... + 18957221.

It is an arithmetic number, because the mean of its divisors is an integer number (2672928681).

Almost surely, 2^10653800561 is an apocalyptic number.

It is an amenable number.

10653800561 is a deficient number, since it is larger than the sum of its proper divisors (37914163).

10653800561 is an equidigital number, since it uses as much as digits as its factorization.

10653800561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37914162.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 10653800561 in words is "ten billion, six hundred fifty-three million, eight hundred thousand, five hundred sixty-one".