23944490997 has 16 divisors (see below), whose sum is σ = 37175276160. Its totient is φ = 13424404032.

The previous prime is 23944490989. The next prime is 23944491019. The reversal of 23944490997 is 79909444932.

It is not a de Polignac number, because 23944490997 - 2³ = 23944490989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23944490997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23944495997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10755622 + ... + 10757847.

It is an arithmetic number, because the mean of its divisors is an integer number (2323454760).

Almost surely, 2^23944490997 is an apocalyptic number.

It is an amenable number.

23944490997 is a deficient number, since it is larger than the sum of its proper divisors (13230785163).

23944490997 is a wasteful number, since it uses less digits than its factorization.

23944490997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21513532.

The product of its (nonzero) digits is 17635968, while the sum is 60.

The spelling of 23944490997 in words is "twenty-three billion, nine hundred forty-four million, four hundred ninety thousand, nine hundred ninety-seven".