23909889271 has 4 divisors (see below), whose sum is σ = 24493057344. Its totient is φ = 23326721200.

The previous prime is 23909889253. The next prime is 23909889293. The reversal of 23909889271 is 17298890932.

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 23909889271 - 2⁵ = 23909889239 is a prime.

It is a super-2 number, since 2×23909889271² (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 (23909889371) 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, 291583975 + ... + 291584056.

It is an arithmetic number, because the mean of its divisors is an integer number (6123264336).

Almost surely, 2^23909889271 is an apocalyptic number.

23909889271 is a deficient number, since it is larger than the sum of its proper divisors (583168073).

23909889271 is an equidigital number, since it uses as much as digits as its factorization.

23909889271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583168072.

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

The spelling of 23909889271 in words is "twenty-three billion, nine hundred nine million, eight hundred eighty-nine thousand, two hundred seventy-one".