11610560657 has 4 divisors (see below), whose sum is σ = 11610950436. Its totient is φ = 11610170880.

The previous prime is 11610560629. The next prime is 11610560681. The reversal of 11610560657 is 75606501611.

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 8173787281 + 3436773376 = 90409^2 + 58624^2 .

It is a cyclic number.

It is not a de Polignac number, because 11610560657 - 2¹⁴ = 11610544273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11610560657.

It is not an unprimeable number, because it can be changed into a prime (11610560257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146144 + ... + 211137.

It is an arithmetic number, because the mean of its divisors is an integer number (2902737609).

Almost surely, 2^11610560657 is an apocalyptic number.

It is an amenable number.

11610560657 is a deficient number, since it is larger than the sum of its proper divisors (389779).

11610560657 is an equidigital number, since it uses as much as digits as its factorization.

11610560657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389778.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 11610560657 in words is "eleven billion, six hundred ten million, five hundred sixty thousand, six hundred fifty-seven".