28818080851 has 24 divisors (see below), whose sum is σ = 34995366144. Its totient is φ = 23617273680.

The previous prime is 28818080831. The next prime is 28818080869. The reversal of 28818080851 is 15808081882.

It is not a de Polignac number, because 28818080851 - 2¹⁷ = 28817949779 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28818080795 and 28818080804.

It is not an unprimeable number, because it can be changed into a prime (28818080801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3953256 + ... + 3960538.

It is an arithmetic number, because the mean of its divisors is an integer number (1458140256).

Almost surely, 2^28818080851 is an apocalyptic number.

28818080851 is a deficient number, since it is larger than the sum of its proper divisors (6177285293).

28818080851 is a wasteful number, since it uses less digits than its factorization.

28818080851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10831 (or 10824 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 49.

The spelling of 28818080851 in words is "twenty-eight billion, eight hundred eighteen million, eighty thousand, eight hundred fifty-one".