28164078559 has 8 divisors (see below), whose sum is σ = 28491039360. Its totient is φ = 27839002776.

The previous prime is 28164078533. The next prime is 28164078599. The reversal of 28164078559 is 95587046182.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28164078559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28164078599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441189 + ... + 500974.

It is an arithmetic number, because the mean of its divisors is an integer number (3561379920).

Almost surely, 2^28164078559 is an apocalyptic number.

28164078559 is a deficient number, since it is larger than the sum of its proper divisors (326960801).

28164078559 is a wasteful number, since it uses less digits than its factorization.

28164078559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942509.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 28164078559 in words is "twenty-eight billion, one hundred sixty-four million, seventy-eight thousand, five hundred fifty-nine".