11858723593 has 4 divisors (see below), whose sum is σ = 12482866960. Its totient is φ = 11234580228.

The previous prime is 11858723581. The next prime is 11858723603. The reversal of 11858723593 is 39532785811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39532785811 = 11779 ⋅3356209.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11858723593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11858723593.

It is not an unprimeable number, because it can be changed into a prime (11858723533) 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, 312071655 + ... + 312071692.

It is an arithmetic number, because the mean of its divisors is an integer number (3120716740).

Almost surely, 2^11858723593 is an apocalyptic number.

It is an amenable number.

11858723593 is a deficient number, since it is larger than the sum of its proper divisors (624143367).

11858723593 is an equidigital number, since it uses as much as digits as its factorization.

11858723593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624143366.

The product of its digits is 1814400, while the sum is 52.

The spelling of 11858723593 in words is "eleven billion, eight hundred fifty-eight million, seven hundred twenty-three thousand, five hundred ninety-three".