23039605849 has 4 divisors (see below), whose sum is σ = 24811883236. Its totient is φ = 21267328464.

The previous prime is 23039605811. The next prime is 23039605867. The reversal of 23039605849 is 94850693032.

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 13324546624 + 9715059225 = 115432^2 + 98565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23039605849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23039605349) 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, 886138674 + ... + 886138699.

It is an arithmetic number, because the mean of its divisors is an integer number (6202970809).

Almost surely, 2^23039605849 is an apocalyptic number.

It is an amenable number.

23039605849 is a deficient number, since it is larger than the sum of its proper divisors (1772277387).

23039605849 is a wasteful number, since it uses less digits than its factorization.

23039605849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772277386.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 23039605849 in words is "twenty-three billion, thirty-nine million, six hundred five thousand, eight hundred forty-nine".