91668933005 has 16 divisors (see below), whose sum is σ = 122285904384. Its totient is φ = 65510303040.

The previous prime is 91668932989. The next prime is 91668933007. The reversal of 91668933005 is 50033986619.

It is not a de Polignac number, because 91668933005 - 2⁴ = 91668932989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91668933007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22744619 + ... + 22748648.

It is an arithmetic number, because the mean of its divisors is an integer number (7642869024).

Almost surely, 2^91668933005 is an apocalyptic number.

It is an amenable number.

91668933005 is a deficient number, since it is larger than the sum of its proper divisors (30616971379).

91668933005 is a wasteful number, since it uses less digits than its factorization.

91668933005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45493316.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 91668933005 in words is "ninety-one billion, six hundred sixty-eight million, nine hundred thirty-three thousand, five".