28666299573277 has 2 divisors, whose sum is σ = 28666299573278. Its totient is φ = 28666299573276.

The previous prime is 28666299573251. The next prime is 28666299573347. The reversal of 28666299573277 is 77237599266682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27864610345636 + 801689227641 = 5278694^2 + 895371^2 .

It is a cyclic number.

It is not a de Polignac number, because 28666299573277 - 2¹⁵ = 28666299540509 is a prime.

It is a super-2 number, since 2×28666299573277² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28666299573197 and 28666299573206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28666299570277) 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, 14333149786638 + 14333149786639.

It is an arithmetic number, because the mean of its divisors is an integer number (14333149786639).

Almost surely, 2^{28666299573277} is an apocalyptic number.

It is an amenable number.

28666299573277 is a deficient number, since it is larger than the sum of its proper divisors (1).

28666299573277 is an equidigital number, since it uses as much as digits as its factorization.

28666299573277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5761082880, while the sum is 79.

The spelling of 28666299573277 in words is "twenty-eight trillion, six hundred sixty-six billion, two hundred ninety-nine million, five hundred seventy-three thousand, two hundred seventy-seven".