28047768719 has 2 divisors, whose sum is σ = 28047768720. Its totient is φ = 28047768718.

The previous prime is 28047768709. The next prime is 28047768757. The reversal of 28047768719 is 91786774082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28047768719 - 2¹² = 28047764623 is a prime.

It is a super-2 number, since 2×28047768719² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28047768709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14023884359 + 14023884360.

It is an arithmetic number, because the mean of its divisors is an integer number (14023884360).

Almost surely, 2^28047768719 is an apocalyptic number.

28047768719 is a deficient number, since it is larger than the sum of its proper divisors (1).

28047768719 is an equidigital number, since it uses as much as digits as its factorization.

28047768719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 28047768719 in words is "twenty-eight billion, forty-seven million, seven hundred sixty-eight thousand, seven hundred nineteen".