91697005069 has 2 divisors, whose sum is σ = 91697005070. Its totient is φ = 91697005068.

The previous prime is 91697005033. The next prime is 91697005133. The reversal of 91697005069 is 96050079619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89547570025 + 2149435044 = 299245^2 + 46362^2 .

It is a cyclic number.

It is not a de Polignac number, because 91697005069 - 2¹⁹ = 91696480781 is a prime.

It is a super-2 number, since 2×91697005069² (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 (91697005369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45848502534 + 45848502535.

It is an arithmetic number, because the mean of its divisors is an integer number (45848502535).

Almost surely, 2^91697005069 is an apocalyptic number.

It is an amenable number.

91697005069 is a deficient number, since it is larger than the sum of its proper divisors (1).

91697005069 is an equidigital number, since it uses as much as digits as its factorization.

91697005069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 918540, while the sum is 52.

The spelling of 91697005069 in words is "ninety-one billion, six hundred ninety-seven million, five thousand, sixty-nine".