28109002630605 has 32 divisors (see below), whose sum is σ = 48538582934016. Its totient is φ = 13808389883904.

The previous prime is 28109002630561. The next prime is 28109002630613. The reversal of 28109002630605 is 50603620090182.

It is not a de Polignac number, because 28109002630605 - 2¹¹ = 28109002628557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155577892 + ... + 155758461.

It is an arithmetic number, because the mean of its divisors is an integer number (1516830716688).

Almost surely, 2^{28109002630605} is an apocalyptic number.

It is an amenable number.

28109002630605 is a deficient number, since it is larger than the sum of its proper divisors (20429580303411).

28109002630605 is a wasteful number, since it uses less digits than its factorization.

28109002630605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311336837.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 28109002630605 in words is "twenty-eight trillion, one hundred nine billion, two million, six hundred thirty thousand, six hundred five".