23133745917 has 12 divisors (see below), whose sum is σ = 33873157084. Its totient is φ = 15211229760.

The previous prime is 23133745907. The next prime is 23133745937. The reversal of 23133745917 is 71954733132.

23133745917 is a `hidden beast` number, since 23 + 1 + 3 + 37 + 4 + 591 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17820648036 + 5313097881 = 133494^2 + 72891^2 .

It is not a de Polignac number, because 23133745917 - 2⁶ = 23133745853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23133745907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17604934 + ... + 17606247.

Almost surely, 2^23133745917 is an apocalyptic number.

It is an amenable number.

23133745917 is a deficient number, since it is larger than the sum of its proper divisors (10739411167).

23133745917 is a wasteful number, since it uses less digits than its factorization.

23133745917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35211260 (or 35211257 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The spelling of 23133745917 in words is "twenty-three billion, one hundred thirty-three million, seven hundred forty-five thousand, nine hundred seventeen".