23191178219 has 16 divisors (see below), whose sum is σ = 25397128800. Its totient is φ = 21001666560.

The previous prime is 23191178183. The next prime is 23191178267. The reversal of 23191178219 is 91287119132.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23191178219 is a prime.

It is a super-2 number, since 2×23191178219² (a number of 22 digits) contains 22 as substring.

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 23191178219.

It is not an unprimeable number, because it can be changed into a prime (23191178119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3320459 + ... + 3327435.

It is an arithmetic number, because the mean of its divisors is an integer number (1587320550).

Almost surely, 2^23191178219 is an apocalyptic number.

23191178219 is a deficient number, since it is larger than the sum of its proper divisors (2205950581).

23191178219 is a wasteful number, since it uses less digits than its factorization.

23191178219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110.

The product of its digits is 54432, while the sum is 44.

The spelling of 23191178219 in words is "twenty-three billion, one hundred ninety-one million, one hundred seventy-eight thousand, two hundred nineteen".