28086356399 has 2 divisors, whose sum is σ = 28086356400. Its totient is φ = 28086356398.

The previous prime is 28086356369. The next prime is 28086356423. The reversal of 28086356399 is 99365368082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28086356399 - 2⁸ = 28086356143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28086356329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14043178199 + 14043178200.

It is an arithmetic number, because the mean of its divisors is an integer number (14043178200).

Almost surely, 2^28086356399 is an apocalyptic number.

28086356399 is a deficient number, since it is larger than the sum of its proper divisors (1).

28086356399 is an equidigital number, since it uses as much as digits as its factorization.

28086356399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16796160, while the sum is 59.

The spelling of 28086356399 in words is "twenty-eight billion, eighty-six million, three hundred fifty-six thousand, three hundred ninety-nine".