28274636171 has 2 divisors, whose sum is σ = 28274636172. Its totient is φ = 28274636170.

The previous prime is 28274636123. The next prime is 28274636189. The reversal of 28274636171 is 17163647282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28274636171 - 2⁶ = 28274636107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28274636101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14137318085 + 14137318086.

It is an arithmetic number, because the mean of its divisors is an integer number (14137318086).

Almost surely, 2^28274636171 is an apocalyptic number.

28274636171 is a deficient number, since it is larger than the sum of its proper divisors (1).

28274636171 is an equidigital number, since it uses as much as digits as its factorization.

28274636171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The spelling of 28274636171 in words is "twenty-eight billion, two hundred seventy-four million, six hundred thirty-six thousand, one hundred seventy-one".