28028352460769 has 2 divisors, whose sum is σ = 28028352460770. Its totient is φ = 28028352460768.

The previous prime is 28028352460721. The next prime is 28028352460777. The reversal of 28028352460769 is 96706425382082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14125983987025 + 13902368473744 = 3758455^2 + 3728588^2 .

It is a cyclic number.

It is not a de Polignac number, because 28028352460769 - 2⁸ = 28028352460513 is a prime.

It is a super-2 number, since 2×28028352460769² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28028352460369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14014176230384 + 14014176230385.

It is an arithmetic number, because the mean of its divisors is an integer number (14014176230385).

Almost surely, 2^{28028352460769} is an apocalyptic number.

It is an amenable number.

28028352460769 is a deficient number, since it is larger than the sum of its proper divisors (1).

28028352460769 is an equidigital number, since it uses as much as digits as its factorization.

28028352460769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69672960, while the sum is 62.

The spelling of 28028352460769 in words is "twenty-eight trillion, twenty-eight billion, three hundred fifty-two million, four hundred sixty thousand, seven hundred sixty-nine".