28165144459 has 8 divisors (see below), whose sum is σ = 28274374352. Its totient is φ = 28056119040.

The previous prime is 28165144421. The next prime is 28165144507. The reversal of 28165144459 is 95444156182.

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

It is a cyclic number.

It is not a de Polignac number, because 28165144459 - 2⁷ = 28165144331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28165144559) 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, 227839 + ... + 328999.

It is an arithmetic number, because the mean of its divisors is an integer number (3534296794).

Almost surely, 2^28165144459 is an apocalyptic number.

28165144459 is a deficient number, since it is larger than the sum of its proper divisors (109229893).

28165144459 is a wasteful number, since it uses less digits than its factorization.

28165144459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102237.

The product of its digits is 1382400, while the sum is 49.

The spelling of 28165144459 in words is "twenty-eight billion, one hundred sixty-five million, one hundred forty-four thousand, four hundred fifty-nine".