23440040344 has 16 divisors (see below), whose sum is σ = 50228658000. Its totient is φ = 10045731552.

The previous prime is 23440040333. The next prime is 23440040359. The reversal of 23440040344 is 44304004432.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209286019 + ... + 209286130.

It is an arithmetic number, because the mean of its divisors is an integer number (3139291125).

Almost surely, 2^23440040344 is an apocalyptic number.

It is an amenable number.

23440040344 is an abundant number, since it is smaller than the sum of its proper divisors (26788617656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23440040344 is a wasteful number, since it uses less digits than its factorization.

23440040344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418572162 (or 418572158 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 23440040344 its reverse (44304004432), we get a palindrome (67744044776).

The spelling of 23440040344 in words is "twenty-three billion, four hundred forty million, forty thousand, three hundred forty-four".