28076681401 has 2 divisors, whose sum is σ = 28076681402. Its totient is φ = 28076681400.

The previous prime is 28076681393. The next prime is 28076681443. The reversal of 28076681401 is 10418667082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20199231376 + 7877450025 = 142124^2 + 88755^2 .

It is a cyclic number.

It is not a de Polignac number, because 28076681401 - 2³ = 28076681393 is a prime.

It is not a weakly prime, because it can be changed into another prime (28076681491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14038340700 + 14038340701.

It is an arithmetic number, because the mean of its divisors is an integer number (14038340701).

Almost surely, 2^28076681401 is an apocalyptic number.

It is an amenable number.

28076681401 is a deficient number, since it is larger than the sum of its proper divisors (1).

28076681401 is an equidigital number, since it uses as much as digits as its factorization.

28076681401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

It can be divided in two parts, 28076681 and 401, that added together give a palindrome (28077082).

The spelling of 28076681401 in words is "twenty-eight billion, seventy-six million, six hundred eighty-one thousand, four hundred one".