23420539591 has 8 divisors (see below), whose sum is σ = 23922063360. Its totient is φ = 22919149848.

The previous prime is 23420539589. The next prime is 23420539603. The reversal of 23420539591 is 19593502432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23420539591 - 2¹ = 23420539589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420530591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371550 + ... + 429988.

It is an arithmetic number, because the mean of its divisors is an integer number (2990257920).

Almost surely, 2^23420539591 is an apocalyptic number.

23420539591 is a deficient number, since it is larger than the sum of its proper divisors (501523769).

23420539591 is an equidigital number, since it uses as much as digits as its factorization.

23420539591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67013.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 23420539591 in words is "twenty-three billion, four hundred twenty million, five hundred thirty-nine thousand, five hundred ninety-one".