23035620565 has 4 divisors (see below), whose sum is σ = 27642744684. Its totient is φ = 18428496448.

The previous prime is 23035620541. The next prime is 23035620599. The reversal of 23035620565 is 56502653032.

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 11305430929 + 11730189636 = 106327^2 + 108306^2 .

It is a cyclic number.

It is not a de Polignac number, because 23035620565 - 2¹⁵ = 23035587797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2303562052 + ... + 2303562061.

It is an arithmetic number, because the mean of its divisors is an integer number (6910686171).

Almost surely, 2^23035620565 is an apocalyptic number.

It is an amenable number.

23035620565 is a deficient number, since it is larger than the sum of its proper divisors (4607124119).

23035620565 is an equidigital number, since it uses as much as digits as its factorization.

23035620565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607124118.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 23035620565 in words is "twenty-three billion, thirty-five million, six hundred twenty thousand, five hundred sixty-five".