23056802209 has 4 divisors (see below), whose sum is σ = 26350631104. Its totient is φ = 19762973316.

The previous prime is 23056802207. The next prime is 23056802213. The reversal of 23056802209 is 90220865032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23056802209 - 2¹ = 23056802207 is a prime.

It is a super-2 number, since 2×23056802209² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23056802207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646914437 + ... + 1646914450.

It is an arithmetic number, because the mean of its divisors is an integer number (6587657776).

Almost surely, 2^23056802209 is an apocalyptic number.

It is an amenable number.

23056802209 is a deficient number, since it is larger than the sum of its proper divisors (3293828895).

23056802209 is an equidigital number, since it uses as much as digits as its factorization.

23056802209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293828894.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 23056802209 in words is "twenty-three billion, fifty-six million, eight hundred two thousand, two hundred nine".