90236063209 has 2 divisors, whose sum is σ = 90236063210. Its totient is φ = 90236063208.

The previous prime is 90236063173. The next prime is 90236063227.

90236063209 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89427912025 + 808151184 = 299045^2 + 28428^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 90236063209 - 2¹³ = 90236055017 is a prime.

It is not a weakly prime, because it can be changed into another prime (90236063279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45118031604 + 45118031605.

It is an arithmetic number, because the mean of its divisors is an integer number (45118031605).

Almost surely, 2^90236063209 is an apocalyptic number.

It is an amenable number.

90236063209 is a deficient number, since it is larger than the sum of its proper divisors (1).

90236063209 is an equidigital number, since it uses as much as digits as its factorization.

90236063209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 40.

It can be divided in two parts, 902360 and 63209, that added together give a palindrome (965569).

The spelling of 90236063209 in words is "ninety billion, two hundred thirty-six million, sixty-three thousand, two hundred nine".