91133201069 has 2 divisors, whose sum is σ = 91133201070. Its totient is φ = 91133201068.

The previous prime is 91133201051. The next prime is 91133201143. The reversal of 91133201069 is 96010233119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50323948900 + 40809252169 = 224330^2 + 202013^2 .

It is a cyclic number.

It is not a de Polignac number, because 91133201069 - 2⁸ = 91133200813 is a prime.

It is a super-2 number, since 2×91133201069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91133201569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45566600534 + 45566600535.

It is an arithmetic number, because the mean of its divisors is an integer number (45566600535).

Almost surely, 2^91133201069 is an apocalyptic number.

It is an amenable number.

91133201069 is a deficient number, since it is larger than the sum of its proper divisors (1).

91133201069 is an equidigital number, since it uses as much as digits as its factorization.

91133201069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The spelling of 91133201069 in words is "ninety-one billion, one hundred thirty-three million, two hundred one thousand, sixty-nine".