91168710845 has 8 divisors (see below), whose sum is σ = 110464613376. Its totient is φ = 72226861776.

The previous prime is 91168710827. The next prime is 91168710851. The reversal of 91168710845 is 54801786119.

It is a happy number.

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 91168710845 - 2³² = 86873743549 is a prime.

It is a super-2 number, since 2×91168710845² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91168710793 and 91168710802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88512797 + ... + 88513826.

It is an arithmetic number, because the mean of its divisors is an integer number (13808076672).

Almost surely, 2^91168710845 is an apocalyptic number.

It is an amenable number.

91168710845 is a deficient number, since it is larger than the sum of its proper divisors (19295902531).

91168710845 is a wasteful number, since it uses less digits than its factorization.

91168710845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177026731.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 91168710845 in words is "ninety-one billion, one hundred sixty-eight million, seven hundred ten thousand, eight hundred forty-five".