23978034719 has 4 divisors (see below), whose sum is σ = 24005820096. Its totient is φ = 23950249344.

The previous prime is 23978034673. The next prime is 23978034737. The reversal of 23978034719 is 91743087932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23978034719 - 2⁸ = 23978034463 is a prime.

It is a super-2 number, since 2×23978034719² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23978034779) 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 3 ways as a sum of consecutive naturals, for example, 13891394 + ... + 13893119.

It is an arithmetic number, because the mean of its divisors is an integer number (6001455024).

Almost surely, 2^23978034719 is an apocalyptic number.

23978034719 is a deficient number, since it is larger than the sum of its proper divisors (27785377).

23978034719 is an equidigital number, since it uses as much as digits as its factorization.

23978034719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27785376.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 23978034719 in words is "twenty-three billion, nine hundred seventy-eight million, thirty-four thousand, seven hundred nineteen".