23989497945 has 32 divisors (see below), whose sum is σ = 46175278080. Its totient is φ = 10389435840.

The previous prime is 23989497919. The next prime is 23989497947. The reversal of 23989497945 is 54979498932.

It is not a de Polignac number, because 23989497945 - 2⁵ = 23989497913 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23989497945.

It is not an unprimeable number, because it can be changed into a prime (23989497947) 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 31 ways as a sum of consecutive naturals, for example, 6010411 + ... + 6014400.

It is an arithmetic number, because the mean of its divisors is an integer number (1442977440).

Almost surely, 2^23989497945 is an apocalyptic number.

It is an amenable number.

23989497945 is a deficient number, since it is larger than the sum of its proper divisors (22185780135).

23989497945 is a wasteful number, since it uses less digits than its factorization.

23989497945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12024845.

The product of its digits is 176359680, while the sum is 69.

The spelling of 23989497945 in words is "twenty-three billion, nine hundred eighty-nine million, four hundred ninety-seven thousand, nine hundred forty-five".