23440444653 has 8 divisors (see below), whose sum is σ = 31256489728. Its totient is φ = 15625681344.

The previous prime is 23440444637. The next prime is 23440444663. The reversal of 23440444653 is 35644404432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23440444653 - 2⁴ = 23440444637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440444663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276925 + ... + 351522.

It is an arithmetic number, because the mean of its divisors is an integer number (3907061216).

Almost surely, 2^23440444653 is an apocalyptic number.

It is an amenable number.

23440444653 is a deficient number, since it is larger than the sum of its proper divisors (7816045075).

23440444653 is a wasteful number, since it uses less digits than its factorization.

23440444653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640883.

The product of its (nonzero) digits is 552960, while the sum is 39.

The spelling of 23440444653 in words is "twenty-three billion, four hundred forty million, four hundred forty-four thousand, six hundred fifty-three".