28723097593 has 2 divisors, whose sum is σ = 28723097594. Its totient is φ = 28723097592.

The previous prime is 28723097587. The next prime is 28723097629. The reversal of 28723097593 is 39579032782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23849242624 + 4873854969 = 154432^2 + 69813^2 .

It is a cyclic number.

It is not a de Polignac number, because 28723097593 - 2¹⁷ = 28722966521 is a prime.

It is not a weakly prime, because it can be changed into another prime (28723097503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14361548796 + 14361548797.

It is an arithmetic number, because the mean of its divisors is an integer number (14361548797).

Almost surely, 2^28723097593 is an apocalyptic number.

It is an amenable number.

28723097593 is a deficient number, since it is larger than the sum of its proper divisors (1).

28723097593 is an equidigital number, since it uses as much as digits as its factorization.

28723097593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 28723097593 in words is "twenty-eight billion, seven hundred twenty-three million, ninety-seven thousand, five hundred ninety-three".