28142253677 has 2 divisors, whose sum is σ = 28142253678. Its totient is φ = 28142253676.

The previous prime is 28142253647. The next prime is 28142253703. The reversal of 28142253677 is 77635224182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22221566761 + 5920686916 = 149069^2 + 76946^2 .

It is a cyclic number.

It is not a de Polignac number, because 28142253677 - 2¹⁰ = 28142252653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28142253647) 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, 14071126838 + 14071126839.

It is an arithmetic number, because the mean of its divisors is an integer number (14071126839).

Almost surely, 2^28142253677 is an apocalyptic number.

It is an amenable number.

28142253677 is a deficient number, since it is larger than the sum of its proper divisors (1).

28142253677 is an equidigital number, since it uses as much as digits as its factorization.

28142253677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 47.

The spelling of 28142253677 in words is "twenty-eight billion, one hundred forty-two million, two hundred fifty-three thousand, six hundred seventy-seven".