3865555593138 has 8 divisors (see below), whose sum is σ = 7731111186288. Its totient is φ = 1288518531044.

The previous prime is 3865555593113. The next prime is 3865555593139. The reversal of 3865555593138 is 8313955555683.

It is a sphenic number, since it is the product of 3 distinct primes.

3865555593138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3865555593139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322129632756 + ... + 322129632767.

It is an arithmetic number, because the mean of its divisors is an integer number (966388898286).

Almost surely, 2^{3865555593138} is an apocalyptic number.

3865555593138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3865555593138 is a wasteful number, since it uses less digits than its factorization.

3865555593138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644259265528.

The product of its digits is 291600000, while the sum is 66.

The spelling of 3865555593138 in words is "three trillion, eight hundred sixty-five billion, five hundred fifty-five million, five hundred ninety-three thousand, one hundred thirty-eight".