201039665597 has 2 divisors, whose sum is σ = 201039665598. Its totient is φ = 201039665596.

The previous prime is 201039665341. The next prime is 201039665599. The reversal of 201039665597 is 795566930102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182449433881 + 18590231716 = 427141^2 + 136346^2 .

It is a cyclic number.

It is not a de Polignac number, because 201039665597 - 2⁸ = 201039665341 is a prime.

Together with 201039665599, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201039665599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100519832798 + 100519832799.

It is an arithmetic number, because the mean of its divisors is an integer number (100519832799).

Almost surely, 2^201039665597 is an apocalyptic number.

It is an amenable number.

201039665597 is a deficient number, since it is larger than the sum of its proper divisors (1).

201039665597 is an equidigital number, since it uses as much as digits as its factorization.

201039665597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3061800, while the sum is 53.

The spelling of 201039665597 in words is "two hundred one billion, thirty-nine million, six hundred sixty-five thousand, five hundred ninety-seven".