23040512505 has 64 divisors (see below), whose sum is σ = 43399825920. Its totient is φ = 11557582848.

The previous prime is 23040512489. The next prime is 23040512543. The reversal of 23040512505 is 50521504032.

It is a happy number.

23040512505 is a `hidden beast` number, since 2 + 3 + 0 + 405 + 1 + 250 + 5 = 666.

It is not a de Polignac number, because 23040512505 - 2⁴ = 23040512489 is a prime.

It is a super-2 number, since 2×23040512505² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4938804 + ... + 4943466.

It is an arithmetic number, because the mean of its divisors is an integer number (678122280).

Almost surely, 2^23040512505 is an apocalyptic number.

It is an amenable number.

23040512505 is a deficient number, since it is larger than the sum of its proper divisors (20359313415).

23040512505 is a wasteful number, since it uses less digits than its factorization.

23040512505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847 (or 6841 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 23040512505 in words is "twenty-three billion, forty million, five hundred twelve thousand, five hundred five".