23119019999 has 4 divisors (see below), whose sum is σ = 23158007136. Its totient is φ = 23080032864.

The previous prime is 23119019993. The next prime is 23119020037. The reversal of 23119019999 is 99991091132.

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 23119019999 - 2⁴ = 23119019983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23119019999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23119019993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19492679 + ... + 19493864.

It is an arithmetic number, because the mean of its divisors is an integer number (5789501784).

Almost surely, 2^23119019999 is an apocalyptic number.

23119019999 is a deficient number, since it is larger than the sum of its proper divisors (38987137).

23119019999 is an equidigital number, since it uses as much as digits as its factorization.

23119019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38987136.

The product of its (nonzero) digits is 354294, while the sum is 53.

The spelling of 23119019999 in words is "twenty-three billion, one hundred nineteen million, nineteen thousand, nine hundred ninety-nine".