3865649652404 has 24 divisors (see below), whose sum is σ = 7223905920000. Its totient is φ = 1805976476640.

The previous prime is 3865649652379. The next prime is 3865649652407. The reversal of 3865649652404 is 4042569465683.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865649652407) 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 7 ways as a sum of consecutive naturals, for example, 537489404 + ... + 537496595.

It is an arithmetic number, because the mean of its divisors is an integer number (300996080000).

Almost surely, 2^{3865649652404} is an apocalyptic number.

It is an amenable number.

3865649652404 is a deficient number, since it is larger than the sum of its proper divisors (3358256267596).

3865649652404 is a wasteful number, since it uses less digits than its factorization.

3865649652404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074986063 (or 1074986061 counting only the distinct ones).

The product of its (nonzero) digits is 149299200, while the sum is 62.

The spelling of 3865649652404 in words is "three trillion, eight hundred sixty-five billion, six hundred forty-nine million, six hundred fifty-two thousand, four hundred four".