28454854893 has 4 divisors (see below), whose sum is σ = 37939806528. Its totient is φ = 18969903260.

The previous prime is 28454854853. The next prime is 28454854913. The reversal of 28454854893 is 39845845482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28454854893 - 2¹³ = 28454846701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28454854853) 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, 4742475813 + ... + 4742475818.

It is an arithmetic number, because the mean of its divisors is an integer number (9484951632).

Almost surely, 2^28454854893 is an apocalyptic number.

It is an amenable number.

28454854893 is a deficient number, since it is larger than the sum of its proper divisors (9484951635).

28454854893 is an equidigital number, since it uses as much as digits as its factorization.

28454854893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484951634.

The product of its digits is 44236800, while the sum is 60.

The spelling of 28454854893 in words is "twenty-eight billion, four hundred fifty-four million, eight hundred fifty-four thousand, eight hundred ninety-three".