28985599299 has 16 divisors (see below), whose sum is σ = 39722412960. Its totient is φ = 18793378560.

The previous prime is 28985599297. The next prime is 28985599427. The reversal of 28985599299 is 99299558982.

It is not a de Polignac number, because 28985599299 - 2¹ = 28985599297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28985599299.

It is not an unprimeable number, because it can be changed into a prime (28985599297) 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, 873552 + ... + 906125.

It is an arithmetic number, because the mean of its divisors is an integer number (2482650810).

Almost surely, 2^28985599299 is an apocalyptic number.

28985599299 is a deficient number, since it is larger than the sum of its proper divisors (10736813661).

28985599299 is a wasteful number, since it uses less digits than its factorization.

28985599299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779830.

The product of its digits is 377913600, while the sum is 75.

The spelling of 28985599299 in words is "twenty-eight billion, nine hundred eighty-five million, five hundred ninety-nine thousand, two hundred ninety-nine".