3873785578782 has 32 divisors (see below), whose sum is σ = 9139991783424. Its totient is φ = 1071092786400.

The previous prime is 3873785578753. The next prime is 3873785578801. The reversal of 3873785578782 is 2878755873783.

It is a junction number, because it is equal to n+sod(n) for n = 3873785578698 and 3873785578707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1487627569 + ... + 1487630172.

It is an arithmetic number, because the mean of its divisors is an integer number (285624743232).

Almost surely, 2^{3873785578782} is an apocalyptic number.

3873785578782 is an abundant number, since it is smaller than the sum of its proper divisors (5266206204642).

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

3873785578782 is a wasteful number, since it uses less digits than its factorization.

3873785578782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975257784.

The product of its digits is 4425523200, while the sum is 78.

The spelling of 3873785578782 in words is "three trillion, eight hundred seventy-three billion, seven hundred eighty-five million, five hundred seventy-eight thousand, seven hundred eighty-two".