23145342664 has 8 divisors (see below), whose sum is σ = 43397517510. Its totient is φ = 11572671328.

The previous prime is 23145342617. The next prime is 23145342691. The reversal of 23145342664 is 46624354132.

It can be written as a sum of positive squares in only one way, i.e., 22964977764 + 180364900 = 151542^2 + 13430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1446583909 + ... + 1446583924.

Almost surely, 2^23145342664 is an apocalyptic number.

It is an amenable number.

23145342664 is a deficient number, since it is larger than the sum of its proper divisors (20252174846).

23145342664 is a wasteful number, since it uses less digits than its factorization.

23145342664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893167839 (or 2893167835 counting only the distinct ones).

The product of its digits is 414720, while the sum is 40.

Adding to 23145342664 its reverse (46624354132), we get a palindrome (69769696796).

The spelling of 23145342664 in words is "twenty-three billion, one hundred forty-five million, three hundred forty-two thousand, six hundred sixty-four".