23288865511 has 4 divisors (see below), whose sum is σ = 23437202392. Its totient is φ = 23140528632.

The previous prime is 23288865463. The next prime is 23288865517. The reversal of 23288865511 is 11556888232.

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 23288865511 - 2⁹ = 23288864999 is a prime.

It is a super-2 number, since 2×23288865511² (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 (23288865517) 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, 74168205 + ... + 74168518.

It is an arithmetic number, because the mean of its divisors is an integer number (5859300598).

Almost surely, 2^23288865511 is an apocalyptic number.

23288865511 is a deficient number, since it is larger than the sum of its proper divisors (148336881).

23288865511 is a wasteful number, since it uses less digits than its factorization.

23288865511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148336880.

The product of its digits is 921600, while the sum is 49.

The spelling of 23288865511 in words is "twenty-three billion, two hundred eighty-eight million, eight hundred sixty-five thousand, five hundred eleven".