28418791344443 has 2 divisors, whose sum is σ = 28418791344444. Its totient is φ = 28418791344442.

The previous prime is 28418791344421. The next prime is 28418791344497. The reversal of 28418791344443 is 34444319781482.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28418791344443 - 2⁶ = 28418791344379 is a prime.

It is not a weakly prime, because it can be changed into another prime (28418791344413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14209395672221 + 14209395672222.

It is an arithmetic number, because the mean of its divisors is an integer number (14209395672222).

Almost surely, 2^{28418791344443} is an apocalyptic number.

28418791344443 is a deficient number, since it is larger than the sum of its proper divisors (1).

28418791344443 is an equidigital number, since it uses as much as digits as its factorization.

28418791344443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74317824, while the sum is 62.

The spelling of 28418791344443 in words is "twenty-eight trillion, four hundred eighteen billion, seven hundred ninety-one million, three hundred forty-four thousand, four hundred forty-three".