28253271851 has 16 divisors (see below), whose sum is σ = 32828375040. Its totient is φ = 23813131680.

The previous prime is 28253271847. The next prime is 28253271859. The reversal of 28253271851 is 15817235282.

It is a cyclic number.

It is not a de Polignac number, because 28253271851 - 2² = 28253271847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28253271859) 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 15 ways as a sum of consecutive naturals, for example, 1891430 + ... + 1906308.

It is an arithmetic number, because the mean of its divisors is an integer number (2051773440).

Almost surely, 2^28253271851 is an apocalyptic number.

28253271851 is a deficient number, since it is larger than the sum of its proper divisors (4575103189).

28253271851 is a wasteful number, since it uses less digits than its factorization.

28253271851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19394.

The product of its digits is 268800, while the sum is 44.

The spelling of 28253271851 in words is "twenty-eight billion, two hundred fifty-three million, two hundred seventy-one thousand, eight hundred fifty-one".