28165818374 has 4 divisors (see below), whose sum is σ = 42248727564. Its totient is φ = 14082909186.

The previous prime is 28165818337. The next prime is 28165818379. The reversal of 28165818374 is 47381856182.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28165818379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7041454592 + ... + 7041454595.

It is an arithmetic number, because the mean of its divisors is an integer number (10562181891).

Almost surely, 2^28165818374 is an apocalyptic number.

28165818374 is a deficient number, since it is larger than the sum of its proper divisors (14082909190).

28165818374 is a wasteful number, since it uses less digits than its factorization.

28165818374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14082909189.

The product of its digits is 2580480, while the sum is 53.

The spelling of 28165818374 in words is "twenty-eight billion, one hundred sixty-five million, eight hundred eighteen thousand, three hundred seventy-four".