28274289161 has 2 divisors, whose sum is σ = 28274289162. Its totient is φ = 28274289160.

The previous prime is 28274289119. The next prime is 28274289163. The reversal of 28274289161 is 16198247282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27770556025 + 503733136 = 166645^2 + 22444^2 .

It is a cyclic number.

It is not a de Polignac number, because 28274289161 - 2¹⁴ = 28274272777 is a prime.

It is a super-3 number, since 3×28274289161³ (a number of 32 digits) contains 333 as substring.

Together with 28274289163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28274289163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14137144580 + 14137144581.

It is an arithmetic number, because the mean of its divisors is an integer number (14137144581).

Almost surely, 2^28274289161 is an apocalyptic number.

It is an amenable number.

28274289161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28274289161 is an equidigital number, since it uses as much as digits as its factorization.

28274289161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 50.

The spelling of 28274289161 in words is "twenty-eight billion, two hundred seventy-four million, two hundred eighty-nine thousand, one hundred sixty-one".