28086444499 has 16 divisors (see below), whose sum is σ = 29653303680. Its totient is φ = 26528584320.

The previous prime is 28086444497. The next prime is 28086444517. The reversal of 28086444499 is 99444468082.

It is not a de Polignac number, because 28086444499 - 2¹ = 28086444497 is a prime.

It is a super-2 number, since 2×28086444499² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28086444497) 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, 16847664 + ... + 16849330.

It is an arithmetic number, because the mean of its divisors is an integer number (1853331480).

Almost surely, 2^28086444499 is an apocalyptic number.

28086444499 is a deficient number, since it is larger than the sum of its proper divisors (1566859181).

28086444499 is a wasteful number, since it uses less digits than its factorization.

28086444499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810.

The product of its (nonzero) digits is 15925248, while the sum is 58.

The spelling of 28086444499 in words is "twenty-eight billion, eighty-six million, four hundred forty-four thousand, four hundred ninety-nine".