23709703249 has 4 divisors (see below), whose sum is σ = 24740559936. Its totient is φ = 22678846564.

The previous prime is 23709703187. The next prime is 23709703271. The reversal of 23709703249 is 94230790732.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-23709703249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23709703199 and 23709703208.

It is not an unprimeable number, because it can be changed into a prime (23709700249) 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, 515428309 + ... + 515428354.

It is an arithmetic number, because the mean of its divisors is an integer number (6185139984).

Almost surely, 2^23709703249 is an apocalyptic number.

It is an amenable number.

23709703249 is a deficient number, since it is larger than the sum of its proper divisors (1030856687).

23709703249 is a wasteful number, since it uses less digits than its factorization.

23709703249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030856686.

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 23709703249 in words is "twenty-three billion, seven hundred nine million, seven hundred three thousand, two hundred forty-nine".