90205432011197 has 2 divisors, whose sum is σ = 90205432011198. Its totient is φ = 90205432011196.

The previous prime is 90205432011173. The next prime is 90205432011199. The reversal of 90205432011197 is 79111023450209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59295990751321 + 30909441259876 = 7700389^2 + 5559626^2 .

It is a cyclic number.

It is not a de Polignac number, because 90205432011197 - 2⁴⁶ = 19836687833533 is a prime.

Together with 90205432011199, 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 (90205432011199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45102716005598 + 45102716005599.

It is an arithmetic number, because the mean of its divisors is an integer number (45102716005599).

Almost surely, 2^{90205432011197} is an apocalyptic number.

It is an amenable number.

90205432011197 is a deficient number, since it is larger than the sum of its proper divisors (1).

90205432011197 is an equidigital number, since it uses as much as digits as its factorization.

90205432011197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 90205432011197 in words is "ninety trillion, two hundred five billion, four hundred thirty-two million, eleven thousand, one hundred ninety-seven".