28355299209215 has 128 divisors (see below), whose sum is σ = 39475096657920. Its totient is φ = 19360464076800.

The previous prime is 28355299209197. The next prime is 28355299209247. The reversal of 28355299209215 is 51290299255382.

It is not a de Polignac number, because 28355299209215 - 2³² = 28351004241919 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 (31) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6961770419 + ... + 6961774491.

It is an arithmetic number, because the mean of its divisors is an integer number (308399192640).

Almost surely, 2^{28355299209215} is an apocalyptic number.

28355299209215 is a deficient number, since it is larger than the sum of its proper divisors (11119797448705).

28355299209215 is a wasteful number, since it uses less digits than its factorization.

28355299209215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785.

The product of its (nonzero) digits is 34992000, while the sum is 62.

The spelling of 28355299209215 in words is "twenty-eight trillion, three hundred fifty-five billion, two hundred ninety-nine million, two hundred nine thousand, two hundred fifteen".