28354685099 has 16 divisors (see below), whose sum is σ = 31064076288. Its totient is φ = 25724617632.

The previous prime is 28354685071. The next prime is 28354685119. The reversal of 28354685099 is 99058645382.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28354685099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28354685299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96404 + ... + 256910.

It is an arithmetic number, because the mean of its divisors is an integer number (1941504768).

Almost surely, 2^28354685099 is an apocalyptic number.

28354685099 is a deficient number, since it is larger than the sum of its proper divisors (2709391189).

28354685099 is a wasteful number, since it uses less digits than its factorization.

28354685099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160754.

The product of its (nonzero) digits is 18662400, while the sum is 59.

The spelling of 28354685099 in words is "twenty-eight billion, three hundred fifty-four million, six hundred eighty-five thousand, ninety-nine".