6534308331681 has 16 divisors (see below), whose sum is σ = 9790535561856. Its totient is φ = 3846281826816.

The previous prime is 6534308331659. The next prime is 6534308331689. The reversal of 6534308331681 is 1861338034356.

6534308331681 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 6534308331681 - 2⁹ = 6534308331169 is a prime.

It is a super-2 number, since 2×6534308331681² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6534308331689) 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, 3642311440 + ... + 3642313233.

It is an arithmetic number, because the mean of its divisors is an integer number (611908472616).

Almost surely, 2^{6534308331681} is an apocalyptic number.

It is an amenable number.

6534308331681 is a deficient number, since it is larger than the sum of its proper divisors (3256227230175).

6534308331681 is a wasteful number, since it uses less digits than its factorization.

6534308331681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7284624712.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 6534308331681 in words is "six trillion, five hundred thirty-four billion, three hundred eight million, three hundred thirty-one thousand, six hundred eighty-one".