28699395099 has 32 divisors (see below), whose sum is σ = 40247902464. Its totient is φ = 18167587200.

The previous prime is 28699395071. The next prime is 28699395119. The reversal of 28699395099 is 99059399682.

It is not a de Polignac number, because 28699395099 - 2¹⁶ = 28699329563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28699395029) 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 31 ways as a sum of consecutive naturals, for example, 9071892 + ... + 9075054.

It is an arithmetic number, because the mean of its divisors is an integer number (1257746952).

Almost surely, 2^28699395099 is an apocalyptic number.

28699395099 is a deficient number, since it is larger than the sum of its proper divisors (11548507365).

28699395099 is a wasteful number, since it uses less digits than its factorization.

28699395099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5147.

The product of its (nonzero) digits is 85030560, while the sum is 69.

The spelling of 28699395099 in words is "twenty-eight billion, six hundred ninety-nine million, three hundred ninety-five thousand, ninety-nine".