23401744864643 has 4 divisors (see below), whose sum is σ = 23403847269528. Its totient is φ = 23399642459760.

The previous prime is 23401744864639. The next prime is 23401744864657. The reversal of 23401744864643 is 34646844710432.

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 23401744864643 - 2² = 23401744864639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23401744864843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051185746 + ... + 1051208007.

It is an arithmetic number, because the mean of its divisors is an integer number (5850961817382).

Almost surely, 2^{23401744864643} is an apocalyptic number.

23401744864643 is a deficient number, since it is larger than the sum of its proper divisors (2102404885).

23401744864643 is a wasteful number, since it uses less digits than its factorization.

23401744864643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102404884.

The product of its (nonzero) digits is 37158912, while the sum is 56.

The spelling of 23401744864643 in words is "twenty-three trillion, four hundred one billion, seven hundred forty-four million, eight hundred sixty-four thousand, six hundred forty-three".