28423444453 has 2 divisors, whose sum is σ = 28423444454. Its totient is φ = 28423444452.

The previous prime is 28423444447. The next prime is 28423444481. The reversal of 28423444453 is 35444432482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19238522209 + 9184922244 = 138703^2 + 95838^2 .

It is a cyclic number.

It is not a de Polignac number, because 28423444453 - 2¹⁷ = 28423313381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28423444403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14211722226 + 14211722227.

It is an arithmetic number, because the mean of its divisors is an integer number (14211722227).

Almost surely, 2^28423444453 is an apocalyptic number.

It is an amenable number.

28423444453 is a deficient number, since it is larger than the sum of its proper divisors (1).

28423444453 is an equidigital number, since it uses as much as digits as its factorization.

28423444453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1474560, while the sum is 43.

The spelling of 28423444453 in words is "twenty-eight billion, four hundred twenty-three million, four hundred forty-four thousand, four hundred fifty-three".