23145176564 has 24 divisors (see below), whose sum is σ = 41575708776. Its totient is φ = 11270160000.

The previous prime is 23145176533. The next prime is 23145176597. The reversal of 23145176564 is 46567154132.

It can be written as a sum of positive squares in 4 ways, for example, as 2165971600 + 20979204964 = 46540^2 + 144842^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444947 + ... + 494234.

It is an arithmetic number, because the mean of its divisors is an integer number (1732321199).

Almost surely, 2^23145176564 is an apocalyptic number.

It is an amenable number.

23145176564 is a deficient number, since it is larger than the sum of its proper divisors (18430532212).

23145176564 is a wasteful number, since it uses less digits than its factorization.

23145176564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939347 (or 939345 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The spelling of 23145176564 in words is "twenty-three billion, one hundred forty-five million, one hundred seventy-six thousand, five hundred sixty-four".