28080119897 has 2 divisors, whose sum is σ = 28080119898. Its totient is φ = 28080119896.

The previous prime is 28080119891. The next prime is 28080119927. The reversal of 28080119897 is 79891108082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22531210816 + 5548909081 = 150104^2 + 74491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28080119897 is a prime.

It is not a weakly prime, because it can be changed into another prime (28080119891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040059948 + 14040059949.

It is an arithmetic number, because the mean of its divisors is an integer number (14040059949).

Almost surely, 2^28080119897 is an apocalyptic number.

It is an amenable number.

28080119897 is a deficient number, since it is larger than the sum of its proper divisors (1).

28080119897 is an equidigital number, since it uses as much as digits as its factorization.

28080119897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 53.

The spelling of 28080119897 in words is "twenty-eight billion, eighty million, one hundred nineteen thousand, eight hundred ninety-seven".