28005502805499 has 8 divisors (see below), whose sum is σ = 37340713102912. Its totient is φ = 18670313855880.

The previous prime is 28005502805471. The next prime is 28005502805521. The reversal of 28005502805499 is 99450820550082.

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

It is not a de Polignac number, because 28005502805499 - 2⁹ = 28005502804987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28005502805429) 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, 1973017 + ... + 7739754.

It is an arithmetic number, because the mean of its divisors is an integer number (4667589137864).

Almost surely, 2^{28005502805499} is an apocalyptic number.

28005502805499 is a deficient number, since it is larger than the sum of its proper divisors (9335210297413).

28005502805499 is an equidigital number, since it uses as much as digits as its factorization.

28005502805499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673897.

The product of its (nonzero) digits is 10368000, while the sum is 57.

The spelling of 28005502805499 in words is "twenty-eight trillion, five billion, five hundred two million, eight hundred five thousand, four hundred ninety-nine".