36663172645597 has 2 divisors, whose sum is σ = 36663172645598. Its totient is φ = 36663172645596.

The previous prime is 36663172645523. The next prime is 36663172645643. The reversal of 36663172645597 is 79554627136663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21752345651481 + 14910826994116 = 4663941^2 + 3861454^2 .

It is a cyclic number.

It is not a de Polignac number, because 36663172645597 - 2²³ = 36663164256989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36663172645997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18331586322798 + 18331586322799.

It is an arithmetic number, because the mean of its divisors is an integer number (18331586322799).

Almost surely, 2^{36663172645597} is an apocalyptic number.

It is an amenable number.

36663172645597 is a deficient number, since it is larger than the sum of its proper divisors (1).

36663172645597 is an equidigital number, since it uses as much as digits as its factorization.

36663172645597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1028764800, while the sum is 70.

The spelling of 36663172645597 in words is "thirty-six trillion, six hundred sixty-three billion, one hundred seventy-two million, six hundred forty-five thousand, five hundred ninety-seven".