13573820597 has 2 divisors, whose sum is σ = 13573820598. Its totient is φ = 13573820596.

The previous prime is 13573820509. The next prime is 13573820639. The reversal of 13573820597 is 79502837531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11898228241 + 1675592356 = 109079^2 + 40934^2 .

It is a cyclic number.

It is not a de Polignac number, because 13573820597 - 2¹⁰ = 13573819573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13573820497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6786910298 + 6786910299.

It is an arithmetic number, because the mean of its divisors is an integer number (6786910299).

Almost surely, 2^13573820597 is an apocalyptic number.

It is an amenable number.

13573820597 is a deficient number, since it is larger than the sum of its proper divisors (1).

13573820597 is an equidigital number, since it uses as much as digits as its factorization.

13573820597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 13573820597 in words is "thirteen billion, five hundred seventy-three million, eight hundred twenty thousand, five hundred ninety-seven".