23121086585 has 8 divisors (see below), whose sum is σ = 27759669000. Its totient is φ = 18487292544.

The previous prime is 23121086537. The next prime is 23121086587. The reversal of 23121086585 is 58568012132.

It can be written as a sum of positive squares in 4 ways, for example, as 2875211641 + 20245874944 = 53621^2 + 142288^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23121086585 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23121086587) 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, 1186460 + ... + 1205789.

It is an arithmetic number, because the mean of its divisors is an integer number (3469958625).

Almost surely, 2^23121086585 is an apocalyptic number.

It is an amenable number.

23121086585 is a deficient number, since it is larger than the sum of its proper divisors (4638582415).

23121086585 is a wasteful number, since it uses less digits than its factorization.

23121086585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394187.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 23121086585 in words is "twenty-three billion, one hundred twenty-one million, eighty-six thousand, five hundred eighty-five".