23659949405 has 16 divisors (see below), whose sum is σ = 29974975680. Its totient is φ = 17878516992.

The previous prime is 23659949399. The next prime is 23659949447. The reversal of 23659949405 is 50494995632.

It is a cyclic number.

It is not a de Polignac number, because 23659949405 - 2⁴ = 23659949389 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337499 + ... + 401528.

It is an arithmetic number, because the mean of its divisors is an integer number (1873435980).

Almost surely, 2^23659949405 is an apocalyptic number.

It is an amenable number.

23659949405 is a deficient number, since it is larger than the sum of its proper divisors (6315026275).

23659949405 is a wasteful number, since it uses less digits than its factorization.

23659949405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739388.

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 23659949405 in words is "twenty-three billion, six hundred fifty-nine million, nine hundred forty-nine thousand, four hundred five".