91168913602 has 8 divisors (see below), whose sum is σ = 147272860476. Its totient is φ = 42077960112.

The previous prime is 91168913597. The next prime is 91168913609. The reversal of 91168913602 is 20631986119.

It can be written as a sum of positive squares in 2 ways, for example, as 91168367481 + 546121 = 301941^2 + 739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×91168913602² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91168913609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1753248313 + ... + 1753248364.

Almost surely, 2^91168913602 is an apocalyptic number.

91168913602 is a deficient number, since it is larger than the sum of its proper divisors (56103946874).

91168913602 is a wasteful number, since it uses less digits than its factorization.

91168913602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506496692.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 91168913602 in words is "ninety-one billion, one hundred sixty-eight million, nine hundred thirteen thousand, six hundred two".