28346780573 has 2 divisors, whose sum is σ = 28346780574. Its totient is φ = 28346780572.

The previous prime is 28346780551. The next prime is 28346780603. The reversal of 28346780573 is 37508764382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23136539449 + 5210241124 = 152107^2 + 72182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28346780573 is a prime.

It is a super-3 number, since 3×28346780573³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28346780503) 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, 14173390286 + 14173390287.

It is an arithmetic number, because the mean of its divisors is an integer number (14173390287).

Almost surely, 2^28346780573 is an apocalyptic number.

It is an amenable number.

28346780573 is a deficient number, since it is larger than the sum of its proper divisors (1).

28346780573 is an equidigital number, since it uses as much as digits as its factorization.

28346780573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 28346780573 in words is "twenty-eight billion, three hundred forty-six million, seven hundred eighty thousand, five hundred seventy-three".