18716028574433 has 2 divisors, whose sum is σ = 18716028574434. Its totient is φ = 18716028574432.

The previous prime is 18716028574429. The next prime is 18716028574493. The reversal of 18716028574433 is 33447582061781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12126991358689 + 6589037215744 = 3482383^2 + 2566912^2 .

It is a cyclic number.

It is not a de Polignac number, because 18716028574433 - 2² = 18716028574429 is a prime.

It is not a weakly prime, because it can be changed into another prime (18716028574493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9358014287216 + 9358014287217.

It is an arithmetic number, because the mean of its divisors is an integer number (9358014287217).

Almost surely, 2^{18716028574433} is an apocalyptic number.

It is an amenable number.

18716028574433 is a deficient number, since it is larger than the sum of its proper divisors (1).

18716028574433 is an equidigital number, since it uses as much as digits as its factorization.

18716028574433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27095040, while the sum is 59.

The spelling of 18716028574433 in words is "eighteen trillion, seven hundred sixteen billion, twenty-eight million, five hundred seventy-four thousand, four hundred thirty-three".