28342475177 has 2 divisors, whose sum is σ = 28342475178. Its totient is φ = 28342475176.

The previous prime is 28342475173. The next prime is 28342475243. The reversal of 28342475177 is 77157424382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27523141801 + 819333376 = 165901^2 + 28624^2 .

It is a cyclic number.

It is not a de Polignac number, because 28342475177 - 2² = 28342475173 is a prime.

It is a super-2 number, since 2×28342475177² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28342475173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14171237588 + 14171237589.

It is an arithmetic number, because the mean of its divisors is an integer number (14171237589).

Almost surely, 2^28342475177 is an apocalyptic number.

It is an amenable number.

28342475177 is a deficient number, since it is larger than the sum of its proper divisors (1).

28342475177 is an equidigital number, since it uses as much as digits as its factorization.

28342475177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2634240, while the sum is 50.

The spelling of 28342475177 in words is "twenty-eight billion, three hundred forty-two million, four hundred seventy-five thousand, one hundred seventy-seven".