28366799097 has 128 divisors (see below), whose sum is σ = 50519669760. Its totient is φ = 13735526400.

The previous prime is 28366799089. The next prime is 28366799117. The reversal of 28366799097 is 79099766382.

It is a happy number.

It is not a de Polignac number, because 28366799097 - 2³ = 28366799089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28366799497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 34217679 + ... + 34218507.

It is an arithmetic number, because the mean of its divisors is an integer number (394684920).

Almost surely, 2^28366799097 is an apocalyptic number.

It is an amenable number.

28366799097 is a deficient number, since it is larger than the sum of its proper divisors (22152870663).

28366799097 is a wasteful number, since it uses less digits than its factorization.

28366799097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043.

The product of its (nonzero) digits is 61725888, while the sum is 66.

The spelling of 28366799097 in words is "twenty-eight billion, three hundred sixty-six million, seven hundred ninety-nine thousand, ninety-seven".