3806481831256 has 64 divisors (see below), whose sum is σ = 7813912377600. Its totient is φ = 1727651289600.

The previous prime is 3806481831253. The next prime is 3806481831259. The reversal of 3806481831256 is 6521381846083.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3806481831253) and next prime (3806481831259).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3806481831197 and 3806481831206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806481831253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29365146 + ... + 29494486.

It is an arithmetic number, because the mean of its divisors is an integer number (122092380900).

Almost surely, 2^{3806481831256} 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 3806481831256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3906956188800).

3806481831256 is an abundant number, since it is smaller than the sum of its proper divisors (4007430546344).

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

3806481831256 is a wasteful number, since it uses less digits than its factorization.

3806481831256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134060 (or 134056 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 3806481831256 in words is "three trillion, eight hundred six billion, four hundred eighty-one million, eight hundred thirty-one thousand, two hundred fifty-six".