23013120643 has 4 divisors (see below), whose sum is σ = 24366833640. Its totient is φ = 21659407648.

The previous prime is 23013120629. The next prime is 23013120659. The reversal of 23013120643 is 34602131032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23013120643 - 2³³ = 14423186051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23013120673) 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 3 ways as a sum of consecutive naturals, for example, 676856473 + ... + 676856506.

It is an arithmetic number, because the mean of its divisors is an integer number (6091708410).

Almost surely, 2^23013120643 is an apocalyptic number.

23013120643 is a deficient number, since it is larger than the sum of its proper divisors (1353712997).

23013120643 is a wasteful number, since it uses less digits than its factorization.

23013120643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353712996.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 23013120643 its reverse (34602131032), we get a palindrome (57615251675).

The spelling of 23013120643 in words is "twenty-three billion, thirteen million, one hundred twenty thousand, six hundred forty-three".