11861596158 has 8 divisors (see below), whose sum is σ = 23723192328. Its totient is φ = 3953865384.

The previous prime is 11861596141. The next prime is 11861596169. The reversal of 11861596158 is 85169516811.

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

11861596158 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 11861596158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988466341 + ... + 988466352.

It is an arithmetic number, because the mean of its divisors is an integer number (2965399041).

Almost surely, 2^11861596158 is an apocalyptic number.

11861596158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11861596158 is a wasteful number, since it uses less digits than its factorization.

11861596158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976932698.

The product of its digits is 518400, while the sum is 51.

The spelling of 11861596158 in words is "eleven billion, eight hundred sixty-one million, five hundred ninety-six thousand, one hundred fifty-eight".