3668536836681 has 16 divisors (see below), whose sum is σ = 4963689394560. Its totient is φ = 2409585171840.

The previous prime is 3668536836673. The next prime is 3668536836683. The reversal of 3668536836681 is 1866386358663.

3668536836681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3668536836681 - 2³ = 3668536836673 is a prime.

It is a super-2 number, since 2×3668536836681² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3668536836683) 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, 5617276 + ... + 6236253.

It is an arithmetic number, because the mean of its divisors is an integer number (310230587160).

Almost surely, 2^{3668536836681} is an apocalyptic number.

It is an amenable number.

3668536836681 is a deficient number, since it is larger than the sum of its proper divisors (1295152557879).

3668536836681 is a wasteful number, since it uses less digits than its factorization.

3668536836681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11855056.

The product of its digits is 537477120, while the sum is 69.

The spelling of 3668536836681 in words is "three trillion, six hundred sixty-eight billion, five hundred thirty-six million, eight hundred thirty-six thousand, six hundred eighty-one".