13805514800785 has 4 divisors (see below), whose sum is σ = 16566617760948. Its totient is φ = 11044411840624.

The previous prime is 13805514800747. The next prime is 13805514800807. The reversal of 13805514800785 is 58700841550831.

13805514800785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1549185983569 + 12256328817216 = 1244663^2 + 3500904^2 .

It is a cyclic number.

It is not a de Polignac number, because 13805514800785 - 2²⁵ = 13805481246353 is a prime.

It is a Duffinian 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, 1380551480074 + ... + 1380551480083.

It is an arithmetic number, because the mean of its divisors is an integer number (4141654440237).

Almost surely, 2^{13805514800785} is an apocalyptic number.

It is an amenable number.

13805514800785 is a deficient number, since it is larger than the sum of its proper divisors (2761102960163).

13805514800785 is an equidigital number, since it uses as much as digits as its factorization.

13805514800785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761102960162.

The product of its (nonzero) digits is 5376000, while the sum is 55.

The spelling of 13805514800785 in words is "thirteen trillion, eight hundred five billion, five hundred fourteen million, eight hundred thousand, seven hundred eighty-five".