3805542643256 has 64 divisors (see below), whose sum is σ = 7308921600000. Its totient is φ = 1857063326976.

The previous prime is 3805542643241. The next prime is 3805542643271. The reversal of 3805542643256 is 6523462455083.

It is an interprime number because it is at equal distance from previous prime (3805542643241) and next prime (3805542643271).

It is a junction number, because it is equal to n+sod(n) for n = 3805542643198 and 3805542643207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275777045 + ... + 275790843.

It is an arithmetic number, because the mean of its divisors is an integer number (114201900000).

Almost surely, 2^{3805542643256} is an apocalyptic number.

It is an amenable number.

3805542643256 is a deficient number, since it is larger than the sum of its proper divisors (3503378956744).

3805542643256 is a wasteful number, since it uses less digits than its factorization.

3805542643256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18876 (or 18872 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 53.

The spelling of 3805542643256 in words is "three trillion, eight hundred five billion, five hundred forty-two million, six hundred forty-three thousand, two hundred fifty-six".