28433014891 has 2 divisors, whose sum is σ = 28433014892. Its totient is φ = 28433014890.

The previous prime is 28433014867. The next prime is 28433014957. The reversal of 28433014891 is 19841033482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28433014891 - 2⁵ = 28433014859 is a prime.

It is not a weakly prime, because it can be changed into another prime (28433011891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14216507445 + 14216507446.

It is an arithmetic number, because the mean of its divisors is an integer number (14216507446).

Almost surely, 2^28433014891 is an apocalyptic number.

28433014891 is a deficient number, since it is larger than the sum of its proper divisors (1).

28433014891 is an equidigital number, since it uses as much as digits as its factorization.

28433014891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 28433014891 in words is "twenty-eight billion, four hundred thirty-three million, fourteen thousand, eight hundred ninety-one".