23919878029 has 2 divisors, whose sum is σ = 23919878030. Its totient is φ = 23919878028.

The previous prime is 23919877997. The next prime is 23919878041. The reversal of 23919878029 is 92087891932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11967922404 + 11951955625 = 109398^2 + 109325^2 .

It is a cyclic number.

It is not a de Polignac number, because 23919878029 - 2⁵ = 23919877997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23919878329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11959939014 + 11959939015.

It is an arithmetic number, because the mean of its divisors is an integer number (11959939015).

Almost surely, 2^23919878029 is an apocalyptic number.

It is an amenable number.

23919878029 is a deficient number, since it is larger than the sum of its proper divisors (1).

23919878029 is an equidigital number, since it uses as much as digits as its factorization.

23919878029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 23919878029 in words is "twenty-three billion, nine hundred nineteen million, eight hundred seventy-eight thousand, twenty-nine".