23173121161245 has 32 divisors (see below), whose sum is σ = 42576452282880. Its totient is φ = 10644113067840.

The previous prime is 23173121161217. The next prime is 23173121161261. The reversal of 23173121161245 is 54216112137132.

It is not a de Polignac number, because 23173121161245 - 2¹⁰ = 23173121160221 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3695869459 + ... + 3695875728.

It is an arithmetic number, because the mean of its divisors is an integer number (1330514133840).

Almost surely, 2^{23173121161245} is an apocalyptic number.

It is an amenable number.

23173121161245 is a deficient number, since it is larger than the sum of its proper divisors (19403331121635).

23173121161245 is a wasteful number, since it uses less digits than its factorization.

23173121161245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391745225.

The product of its digits is 60480, while the sum is 39.

Adding to 23173121161245 its reverse (54216112137132), we get a palindrome (77389233298377).

The spelling of 23173121161245 in words is "twenty-three trillion, one hundred seventy-three billion, one hundred twenty-one million, one hundred sixty-one thousand, two hundred forty-five".