30976636846681 has 8 divisors (see below), whose sum is σ = 31013537335560. Its totient is φ = 30939748828032.

The previous prime is 30976636846669. The next prime is 30976636846711. The reversal of 30976636846681 is 18664863667903.

It can be written as a sum of positive squares in 4 ways, for example, as 29167174656 + 30947469672025 = 170784^2 + 5563045^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30976636846681 - 2¹¹ = 30976636844633 is a prime.

It is a super-2 number, since 2×30976636846681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30976636846601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858221 + ... + 8087413.

It is an arithmetic number, because the mean of its divisors is an integer number (3876692166945).

Almost surely, 2^{30976636846681} is an apocalyptic number.

It is an amenable number.

30976636846681 is a deficient number, since it is larger than the sum of its proper divisors (36900488879).

30976636846681 is a wasteful number, since it uses less digits than its factorization.

30976636846681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235115.

The product of its (nonzero) digits is 1128701952, while the sum is 73.

The spelling of 30976636846681 in words is "thirty trillion, nine hundred seventy-six billion, six hundred thirty-six million, eight hundred forty-six thousand, six hundred eighty-one".