23154412505 has 16 divisors (see below), whose sum is σ = 33622542720. Its totient is φ = 14943351552.

The previous prime is 23154412499. The next prime is 23154412507. The reversal of 23154412505 is 50521445132.

It is a cyclic number.

It is not a de Polignac number, because 23154412505 - 2⁶ = 23154412441 is a prime.

It is a super-2 number, since 2×23154412505² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23154412507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19456895 + ... + 19458084.

It is an arithmetic number, because the mean of its divisors is an integer number (2101408920).

Almost surely, 2^23154412505 is an apocalyptic number.

It is an amenable number.

23154412505 is a deficient number, since it is larger than the sum of its proper divisors (10468130215).

23154412505 is a wasteful number, since it uses less digits than its factorization.

23154412505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38915008.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 23154412505 its reverse (50521445132), we get a palindrome (73675857637).

The spelling of 23154412505 in words is "twenty-three billion, one hundred fifty-four million, four hundred twelve thousand, five hundred five".