23356738517 has 12 divisors (see below), whose sum is σ = 27270357696. Its totient is φ = 19946175480.

The previous prime is 23356738459. The next prime is 23356738523. The reversal of 23356738517 is 71583765332.

It is a happy number.

It is not a de Polignac number, because 23356738517 - 2¹⁶ = 23356672981 is a prime.

It is a super-2 number, since 2×23356738517² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23356768517) 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, 866183 + ... + 892740.

It is an arithmetic number, because the mean of its divisors is an integer number (2272529808).

Almost surely, 2^23356738517 is an apocalyptic number.

It is an amenable number.

23356738517 is a deficient number, since it is larger than the sum of its proper divisors (3913619179).

23356738517 is a wasteful number, since it uses less digits than its factorization.

23356738517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759208 (or 1759201 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 50.

The spelling of 23356738517 in words is "twenty-three billion, three hundred fifty-six million, seven hundred thirty-eight thousand, five hundred seventeen".