3864734289855 has 24 divisors (see below), whose sum is σ = 6698919953232. Its totient is φ = 2061177103104.

The previous prime is 3864734289833. The next prime is 3864734289887. The reversal of 3864734289855 is 5589824374683.

3864734289855 is a `hidden beast` number, since 3 + 8 + 64 + 7 + 3 + 428 + 98 + 55 = 666.

It is not a de Polignac number, because 3864734289855 - 2⁷ = 3864734289727 is a prime.

It is a super-2 number, since 2×3864734289855² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10054567 + ... + 10431863.

It is an arithmetic number, because the mean of its divisors is an integer number (279121664718).

Almost surely, 2^{3864734289855} is an apocalyptic number.

3864734289855 is a deficient number, since it is larger than the sum of its proper divisors (2834185663377).

3864734289855 is a wasteful number, since it uses less digits than its factorization.

3864734289855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604935 (or 604932 counting only the distinct ones).

The product of its digits is 1393459200, while the sum is 72.

The spelling of 3864734289855 in words is "three trillion, eight hundred sixty-four billion, seven hundred thirty-four million, two hundred eighty-nine thousand, eight hundred fifty-five".