23440205345 has 8 divisors (see below), whose sum is σ = 28151950464. Its totient is φ = 18736361584.

The previous prime is 23440205333. The next prime is 23440205351. The reversal of 23440205345 is 54350204432.

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

It is a cyclic number.

It is not a de Polignac number, because 23440205345 - 2⁴ = 23440205329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1968809 + ... + 1980678.

It is an arithmetic number, because the mean of its divisors is an integer number (3518993808).

Almost surely, 2^23440205345 is an apocalyptic number.

It is an amenable number.

23440205345 is a deficient number, since it is larger than the sum of its proper divisors (4711745119).

23440205345 is a wasteful number, since it uses less digits than its factorization.

23440205345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950679.

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 23440205345 its reverse (54350204432), we get a palindrome (77790409777).

The spelling of 23440205345 in words is "twenty-three billion, four hundred forty million, two hundred five thousand, three hundred forty-five".