28165174905 has 16 divisors (see below), whose sum is σ = 51502034304. Its totient is φ = 12875508480.

The previous prime is 28165174861. The next prime is 28165174979. The reversal of 28165174905 is 50947156182.

It is a happy number.

It is not a de Polignac number, because 28165174905 - 2⁶ = 28165174841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134119776 + ... + 134119985.

It is an arithmetic number, because the mean of its divisors is an integer number (3218877144).

Almost surely, 2^28165174905 is an apocalyptic number.

It is an amenable number.

28165174905 is a deficient number, since it is larger than the sum of its proper divisors (23336859399).

28165174905 is a wasteful number, since it uses less digits than its factorization.

28165174905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268239776.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 28165174905 in words is "twenty-eight billion, one hundred sixty-five million, one hundred seventy-four thousand, nine hundred five".