28454284608499 has 4 divisors (see below), whose sum is σ = 28508690506936. Its totient is φ = 28399878710064.

The previous prime is 28454284608461. The next prime is 28454284608557. The reversal of 28454284608499 is 99480648245482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28454284608499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28454284608599) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27202948434 + ... + 27202949479.

It is an arithmetic number, because the mean of its divisors is an integer number (7127172626734).

Almost surely, 2^{28454284608499} is an apocalyptic number.

28454284608499 is a deficient number, since it is larger than the sum of its proper divisors (54405898437).

28454284608499 is an equidigital number, since it uses as much as digits as its factorization.

28454284608499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54405898436.

The product of its (nonzero) digits is 1274019840, while the sum is 73.

The spelling of 28454284608499 in words is "twenty-eight trillion, four hundred fifty-four billion, two hundred eighty-four million, six hundred eight thousand, four hundred ninety-nine".