28833376681 has 2 divisors, whose sum is σ = 28833376682. Its totient is φ = 28833376680.

The previous prime is 28833376657. The next prime is 28833376721. The reversal of 28833376681 is 18667333882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22888966681 + 5944410000 = 151291^2 + 77100^2 .

It is a cyclic number.

It is not a de Polignac number, because 28833376681 - 2²⁷ = 28699158953 is a prime.

It is a super-2 number, since 2×28833376681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28833376601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14416688340 + 14416688341.

It is an arithmetic number, because the mean of its divisors is an integer number (14416688341).

Almost surely, 2^28833376681 is an apocalyptic number.

It is an amenable number.

28833376681 is a deficient number, since it is larger than the sum of its proper divisors (1).

28833376681 is an equidigital number, since it uses as much as digits as its factorization.

28833376681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 55.

The spelling of 28833376681 in words is "twenty-eight billion, eight hundred thirty-three million, three hundred seventy-six thousand, six hundred eighty-one".