11805351085 has 16 divisors (see below), whose sum is σ = 15582007872. Its totient is φ = 8585705040.

The previous prime is 11805351053. The next prime is 11805351097. The reversal of 11805351085 is 58015350811.

It is not a de Polignac number, because 11805351085 - 2⁵ = 11805351053 is a prime.

It is a super-2 number, since 2×11805351085² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880299 + ... + 893608.

It is an arithmetic number, because the mean of its divisors is an integer number (973875492).

Almost surely, 2^11805351085 is an apocalyptic number.

It is an amenable number.

11805351085 is a deficient number, since it is larger than the sum of its proper divisors (3776656787).

11805351085 is an equidigital number, since it uses as much as digits as its factorization.

11805351085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773945 (or 1773923 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 37.

The spelling of 11805351085 in words is "eleven billion, eight hundred five million, three hundred fifty-one thousand, eighty-five".