91683416835 has 40 divisors (see below), whose sum is σ = 165185426736. Its totient is φ = 48649567680.

The previous prime is 91683416809. The next prime is 91683416837. The reversal of 91683416835 is 53861438619.

91683416835 is a `hidden beast` number, since 91 + 68 + 3 + 416 + 83 + 5 = 666.

It is not a de Polignac number, because 91683416835 - 2²⁷ = 91549199107 is a prime.

It is a super-2 number, since 2×91683416835² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (91683416837) 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 39 ways as a sum of consecutive naturals, for example, 494781 + ... + 654350.

Almost surely, 2^91683416835 is an apocalyptic number.

91683416835 is a deficient number, since it is larger than the sum of its proper divisors (73502009901).

91683416835 is a wasteful number, since it uses less digits than its factorization.

91683416835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149345 (or 1149336 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 91683416835 in words is "ninety-one billion, six hundred eighty-three million, four hundred sixteen thousand, eight hundred thirty-five".