11855105391750 has 64 divisors (see below), whose sum is σ = 29590897190400. Its totient is φ = 3161302236000.

The previous prime is 11855105391739. The next prime is 11855105391799. The reversal of 11855105391750 is 5719350155811.

It is a junction number, because it is equal to n+sod(n) for n = 11855105391693 and 11855105391702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52320201 + ... + 52546299.

It is an arithmetic number, because the mean of its divisors is an integer number (462357768600).

Almost surely, 2^{11855105391750} is an apocalyptic number.

11855105391750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11855105391750 is an abundant number, since it is smaller than the sum of its proper divisors (17735791798650).

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

11855105391750 is a wasteful number, since it uses less digits than its factorization.

11855105391750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296030 (or 296020 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 51.

The spelling of 11855105391750 in words is "eleven trillion, eight hundred fifty-five billion, one hundred five million, three hundred ninety-one thousand, seven hundred fifty".