23215048809 has 4 divisors (see below), whose sum is σ = 30953398416. Its totient is φ = 15476699204.

The previous prime is 23215048757. The next prime is 23215048837. The reversal of 23215048809 is 90884051232.

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 23215048809 - 2¹⁶ = 23214983273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23215048859) 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, 3869174799 + ... + 3869174804.

It is an arithmetic number, because the mean of its divisors is an integer number (7738349604).

Almost surely, 2^23215048809 is an apocalyptic number.

It is an amenable number.

23215048809 is a deficient number, since it is larger than the sum of its proper divisors (7738349607).

23215048809 is an equidigital number, since it uses as much as digits as its factorization.

23215048809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7738349606.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 23215048809 in words is "twenty-three billion, two hundred fifteen million, forty-eight thousand, eight hundred nine".