23978879997 has 8 divisors (see below), whose sum is σ = 31974119520. Its totient is φ = 15984780240.

The previous prime is 23978879987. The next prime is 23978880011. The reversal of 23978879997 is 79997887932.

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

It is not a de Polignac number, because 23978879997 - 2⁸ = 23978879741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978879927) 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, 234579 + ... + 320912.

It is an arithmetic number, because the mean of its divisors is an integer number (3996764940).

Almost surely, 2^23978879997 is an apocalyptic number.

It is an amenable number.

23978879997 is a deficient number, since it is larger than the sum of its proper divisors (7995239523).

23978879997 is a wasteful number, since it uses less digits than its factorization.

23978879997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569883.

The product of its digits is 864162432, while the sum is 78.

The spelling of 23978879997 in words is "twenty-three billion, nine hundred seventy-eight million, eight hundred seventy-nine thousand, nine hundred ninety-seven".