28454064045217 has 4 divisors (see below), whose sum is σ = 28454074737300. Its totient is φ = 28454053353136.

The previous prime is 28454064045181. The next prime is 28454064045269. The reversal of 28454064045217 is 71254046045482.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25977818760336 + 2476245284881 = 5096844^2 + 1573609^2 .

It is a cyclic number.

It is not a de Polignac number, because 28454064045217 - 2¹¹ = 28454064043169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28454064046217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140383 + ... + 7841515.

It is an arithmetic number, because the mean of its divisors is an integer number (7113518684325).

Almost surely, 2^{28454064045217} is an apocalyptic number.

It is an amenable number.

28454064045217 is a deficient number, since it is larger than the sum of its proper divisors (10692083).

28454064045217 is an equidigital number, since it uses as much as digits as its factorization.

28454064045217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10692082.

The product of its (nonzero) digits is 8601600, while the sum is 52.

The spelling of 28454064045217 in words is "twenty-eight trillion, four hundred fifty-four billion, sixty-four million, forty-five thousand, two hundred seventeen".