23029170091 has 4 divisors (see below), whose sum is σ = 23061652000. Its totient is φ = 22996688184.

The previous prime is 23029170089. The next prime is 23029170097. The reversal of 23029170091 is 19007192032.

It is a happy number.

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 23029170091 - 2¹ = 23029170089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23029170097) 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, 16239891 + ... + 16241308.

It is an arithmetic number, because the mean of its divisors is an integer number (5765413000).

Almost surely, 2^23029170091 is an apocalyptic number.

23029170091 is a deficient number, since it is larger than the sum of its proper divisors (32481909).

23029170091 is an equidigital number, since it uses as much as digits as its factorization.

23029170091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32481908.

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 23029170091 in words is "twenty-three billion, twenty-nine million, one hundred seventy thousand, ninety-one".