28717510819 has 2 divisors, whose sum is σ = 28717510820. Its totient is φ = 28717510818.

The previous prime is 28717510781. The next prime is 28717510823. The reversal of 28717510819 is 91801571782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28717510819 - 2⁷ = 28717510691 is a prime.

It is a super-2 number, since 2×28717510819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28717510519) 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, 14358755409 + 14358755410.

It is an arithmetic number, because the mean of its divisors is an integer number (14358755410).

Almost surely, 2^28717510819 is an apocalyptic number.

28717510819 is a deficient number, since it is larger than the sum of its proper divisors (1).

28717510819 is an equidigital number, since it uses as much as digits as its factorization.

28717510819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 49.

The spelling of 28717510819 in words is "twenty-eight billion, seven hundred seventeen million, five hundred ten thousand, eight hundred nineteen".