91646977163 has 8 divisors (see below), whose sum is σ = 109293289728. Its totient is φ = 75139136424.

The previous prime is 91646977159. The next prime is 91646977171. The reversal of 91646977163 is 36177964619.

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

It is a cyclic number.

It is not a de Polignac number, because 91646977163 - 2² = 91646977159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91646977133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284617781 + ... + 284618102.

It is an arithmetic number, because the mean of its divisors is an integer number (13661661216).

Almost surely, 2^91646977163 is an apocalyptic number.

91646977163 is a deficient number, since it is larger than the sum of its proper divisors (17646312565).

91646977163 is a wasteful number, since it uses less digits than its factorization.

91646977163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569235913.

The product of its digits is 10287648, while the sum is 59.

The spelling of 91646977163 in words is "ninety-one billion, six hundred forty-six million, nine hundred seventy-seven thousand, one hundred sixty-three".