28787313719 has 2 divisors, whose sum is σ = 28787313720. Its totient is φ = 28787313718.

The previous prime is 28787313679. The next prime is 28787313761. The reversal of 28787313719 is 91731378782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28787313719 - 2²⁰ = 28786265143 is a prime.

It is a super-2 number, since 2×28787313719² (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 (28787313769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14393656859 + 14393656860.

It is an arithmetic number, because the mean of its divisors is an integer number (14393656860).

Almost surely, 2^28787313719 is an apocalyptic number.

28787313719 is a deficient number, since it is larger than the sum of its proper divisors (1).

28787313719 is an equidigital number, since it uses as much as digits as its factorization.

28787313719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 56.

The spelling of 28787313719 in words is "twenty-eight billion, seven hundred eighty-seven million, three hundred thirteen thousand, seven hundred nineteen".