28643363093 has 4 divisors (see below), whose sum is σ = 28694239968. Its totient is φ = 28592486220.

The previous prime is 28643363059. The next prime is 28643363107. The reversal of 28643363093 is 39036334682.

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 28643363093 - 2⁸ = 28643362837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28643360093) 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, 25437593 + ... + 25438718.

It is an arithmetic number, because the mean of its divisors is an integer number (7173559992).

Almost surely, 2^28643363093 is an apocalyptic number.

It is an amenable number.

28643363093 is a deficient number, since it is larger than the sum of its proper divisors (50876875).

28643363093 is an equidigital number, since it uses as much as digits as its factorization.

28643363093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50876874.

The product of its (nonzero) digits is 1679616, while the sum is 47.

The spelling of 28643363093 in words is "twenty-eight billion, six hundred forty-three million, three hundred sixty-three thousand, ninety-three".