33897961597397 has 2 divisors, whose sum is σ = 33897961597398. Its totient is φ = 33897961597396.

The previous prime is 33897961597349. The next prime is 33897961597499. The reversal of 33897961597397 is 79379516979833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17904288971716 + 15993672625681 = 4231346^2 + 3999209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33897961597397 is a prime.

It is a super-2 number, since 2×33897961597397² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33897961597337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16948980798698 + 16948980798699.

It is an arithmetic number, because the mean of its divisors is an integer number (16948980798699).

Almost surely, 2^{33897961597397} is an apocalyptic number.

It is an amenable number.

33897961597397 is a deficient number, since it is larger than the sum of its proper divisors (1).

33897961597397 is an equidigital number, since it uses as much as digits as its factorization.

33897961597397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14582741040, while the sum is 86.

The spelling of 33897961597397 in words is "thirty-three trillion, eight hundred ninety-seven billion, nine hundred sixty-one million, five hundred ninety-seven thousand, three hundred ninety-seven".