28245157573 has 2 divisors, whose sum is σ = 28245157574. Its totient is φ = 28245157572.

The previous prime is 28245157571. The next prime is 28245157583. The reversal of 28245157573 is 37575154282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27523805409 + 721352164 = 165903^2 + 26858^2 .

It is a cyclic number.

It is not a de Polignac number, because 28245157573 - 2¹ = 28245157571 is a prime.

Together with 28245157571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28245157571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14122578786 + 14122578787.

It is an arithmetic number, because the mean of its divisors is an integer number (14122578787).

Almost surely, 2^28245157573 is an apocalyptic number.

It is an amenable number.

28245157573 is a deficient number, since it is larger than the sum of its proper divisors (1).

28245157573 is an equidigital number, since it uses as much as digits as its factorization.

28245157573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352000, while the sum is 49.

The spelling of 28245157573 in words is "twenty-eight billion, two hundred forty-five million, one hundred fifty-seven thousand, five hundred seventy-three".