28805414399917 has 2 divisors, whose sum is σ = 28805414399918. Its totient is φ = 28805414399916.

The previous prime is 28805414399863. The next prime is 28805414400011. The reversal of 28805414399917 is 71999341450882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28398464818441 + 406949581476 = 5329021^2 + 637926^2 .

It is a cyclic number.

It is not a de Polignac number, because 28805414399917 - 2¹⁹ = 28805413875629 is a prime.

It is a super-2 number, since 2×28805414399917² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28800414399917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14402707199958 + 14402707199959.

It is an arithmetic number, because the mean of its divisors is an integer number (14402707199959).

Almost surely, 2^{28805414399917} is an apocalyptic number.

It is an amenable number.

28805414399917 is a deficient number, since it is larger than the sum of its proper divisors (1).

28805414399917 is an equidigital number, since it uses as much as digits as its factorization.

28805414399917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156764160, while the sum is 70.

The spelling of 28805414399917 in words is "twenty-eight trillion, eight hundred five billion, four hundred fourteen million, three hundred ninety-nine thousand, nine hundred seventeen".