11855117422 has 16 divisors (see below), whose sum is σ = 17829418752. Its totient is φ = 5911993080.

The previous prime is 11855117419. The next prime is 11855117509. The reversal of 11855117422 is 22471155811.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2715013 + ... + 2719375.

It is an arithmetic number, because the mean of its divisors is an integer number (1114338672).

Almost surely, 2^11855117422 is an apocalyptic number.

11855117422 is a deficient number, since it is larger than the sum of its proper divisors (5974301330).

11855117422 is a wasteful number, since it uses less digits than its factorization.

11855117422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623.

The product of its digits is 22400, while the sum is 37.

The spelling of 11855117422 in words is "eleven billion, eight hundred fifty-five million, one hundred seventeen thousand, four hundred twenty-two".