28318168464 has 20 divisors (see below), whose sum is σ = 73155268656. Its totient is φ = 9439389472.

The previous prime is 28318168447. The next prime is 28318168511. The reversal of 28318168464 is 46486181382.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294980874 + ... + 294980969.

Almost surely, 2^28318168464 is an apocalyptic number.

28318168464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28318168464 is an abundant number, since it is smaller than the sum of its proper divisors (44837100192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28318168464 is a wasteful number, since it uses less digits than its factorization.

28318168464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589961854 (or 589961848 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 51.

The spelling of 28318168464 in words is "twenty-eight billion, three hundred eighteen million, one hundred sixty-eight thousand, four hundred sixty-four".