28027347769 has 2 divisors, whose sum is σ = 28027347770. Its totient is φ = 28027347768.

The previous prime is 28027347763. The next prime is 28027347833. The reversal of 28027347769 is 96774372082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28026777744 + 570025 = 167412^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 28027347769 - 2²³ = 28018959161 is a prime.

It is a super-2 number, since 2×28027347769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28027347763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14013673884 + 14013673885.

It is an arithmetic number, because the mean of its divisors is an integer number (14013673885).

Almost surely, 2^28027347769 is an apocalyptic number.

It is an amenable number.

28027347769 is a deficient number, since it is larger than the sum of its proper divisors (1).

28027347769 is an equidigital number, since it uses as much as digits as its factorization.

28027347769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7112448, while the sum is 55.

The spelling of 28027347769 in words is "twenty-eight billion, twenty-seven million, three hundred forty-seven thousand, seven hundred sixty-nine".