3865266545000 has 160 divisors (see below), whose sum is σ = 10355572656000. Its totient is φ = 1324530912000.

The previous prime is 3865266544987. The next prime is 3865266545017. The reversal of 3865266545000 is 5456625683.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 3865266545000.

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 39 ways as a sum of consecutive naturals, for example, 68186669 + ... + 68243331.

It is an arithmetic number, because the mean of its divisors is an integer number (64722329100).

Almost surely, 2^{3865266545000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3865266545000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5177786328000).

3865266545000 is an abundant number, since it is smaller than the sum of its proper divisors (6490306111000).

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

3865266545000 is a wasteful number, since it uses less digits than its factorization.

3865266545000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58645 (or 58626 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 3865266545000 in words is "three trillion, eight hundred sixty-five billion, two hundred sixty-six million, five hundred forty-five thousand".