90691042223 has 2 divisors, whose sum is σ = 90691042224. Its totient is φ = 90691042222.

The previous prime is 90691042201. The next prime is 90691042229. The reversal of 90691042223 is 32224019609.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32224019609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90691042223 - 2¹⁴ = 90691025839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90691042229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45345521111 + 45345521112.

It is an arithmetic number, because the mean of its divisors is an integer number (45345521112).

Almost surely, 2^90691042223 is an apocalyptic number.

90691042223 is a deficient number, since it is larger than the sum of its proper divisors (1).

90691042223 is an equidigital number, since it uses as much as digits as its factorization.

90691042223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 90691042223 in words is "ninety billion, six hundred ninety-one million, forty-two thousand, two hundred twenty-three".