3686544011440 has 20 divisors (see below), whose sum is σ = 8571214826784. Its totient is φ = 1474617604544.

The previous prime is 3686544011429. The next prime is 3686544011441. The reversal of 3686544011440 is 441104456863.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (3686544011441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23040899992 + ... + 23040900151.

Almost surely, 2^{3686544011440} is an apocalyptic number.

It is an amenable number.

3686544011440 is an abundant number, since it is smaller than the sum of its proper divisors (4884670815344).

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

3686544011440 is a wasteful number, since it uses less digits than its factorization.

3686544011440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46081800156 (or 46081800150 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 3686544011440 in words is "three trillion, six hundred eighty-six billion, five hundred forty-four million, eleven thousand, four hundred forty".