28573335397 has 2 divisors, whose sum is σ = 28573335398. Its totient is φ = 28573335396.

The previous prime is 28573335341. The next prime is 28573335403. The reversal of 28573335397 is 79353337582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28488713796 + 84621601 = 168786^2 + 9199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28573335397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28573035397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14286667698 + 14286667699.

It is an arithmetic number, because the mean of its divisors is an integer number (14286667699).

Almost surely, 2^28573335397 is an apocalyptic number.

It is an amenable number.

28573335397 is a deficient number, since it is larger than the sum of its proper divisors (1).

28573335397 is an equidigital number, since it uses as much as digits as its factorization.

28573335397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14288400, while the sum is 55.

The spelling of 28573335397 in words is "twenty-eight billion, five hundred seventy-three million, three hundred thirty-five thousand, three hundred ninety-seven".