11587798591 has 6 divisors (see below), whose sum is σ = 11748715440. Its totient is φ = 11429056368.

The previous prime is 11587798517. The next prime is 11587798609. The reversal of 11587798591 is 19589778511.

It is not a de Polignac number, because 11587798591 - 2¹³ = 11587790399 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 (11587798501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1081911 + ... + 1092568.

It is an arithmetic number, because the mean of its divisors is an integer number (1958119240).

Almost surely, 2^11587798591 is an apocalyptic number.

11587798591 is a deficient number, since it is larger than the sum of its proper divisors (160916849).

11587798591 is an frugal number, since it uses more digits than its factorization.

11587798591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174625 (or 2174552 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 61.

The spelling of 11587798591 in words is "eleven billion, five hundred eighty-seven million, seven hundred ninety-eight thousand, five hundred ninety-one".