23315500511 has 4 divisors (see below), whose sum is σ = 23325471000. Its totient is φ = 23305530024.

The previous prime is 23315500433. The next prime is 23315500517. The reversal of 23315500511 is 11500551332.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23315500511 - 2¹⁸ = 23315238367 is a prime.

It is a super-2 number, since 2×23315500511² (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 (23315500517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4981736 + ... + 4986413.

It is an arithmetic number, because the mean of its divisors is an integer number (5831367750).

Almost surely, 2^23315500511 is an apocalyptic number.

23315500511 is a deficient number, since it is larger than the sum of its proper divisors (9970489).

23315500511 is an equidigital number, since it uses as much as digits as its factorization.

23315500511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9970488.

The product of its (nonzero) digits is 2250, while the sum is 26.

The spelling of 23315500511 in words is "twenty-three billion, three hundred fifteen million, five hundred thousand, five hundred eleven".