28161704554 has 8 divisors (see below), whose sum is σ = 42243781248. Its totient is φ = 14080444140.

The previous prime is 28161704537. The next prime is 28161704581. The reversal of 28161704554 is 45540716182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28161704554.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108952 + ... + 261139.

It is an arithmetic number, because the mean of its divisors is an integer number (5280472656).

Almost surely, 2^28161704554 is an apocalyptic number.

28161704554 is a deficient number, since it is larger than the sum of its proper divisors (14082076694).

28161704554 is a wasteful number, since it uses less digits than its factorization.

28161704554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408140.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 28161704554 in words is "twenty-eight billion, one hundred sixty-one million, seven hundred four thousand, five hundred fifty-four".