91160223563 has 16 divisors (see below), whose sum is σ = 98285408256. Its totient is φ = 84303853920.

The previous prime is 91160223523. The next prime is 91160223587. The reversal of 91160223563 is 36532206119.

It is a cyclic number.

It is not a de Polignac number, because 91160223563 - 2¹⁰ = 91160222539 is a prime.

It is a super-2 number, since 2×91160223563² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91160223503) 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, 697781 + ... + 818057.

It is an arithmetic number, because the mean of its divisors is an integer number (6142838016).

Almost surely, 2^91160223563 is an apocalyptic number.

91160223563 is a deficient number, since it is larger than the sum of its proper divisors (7125184693).

91160223563 is a wasteful number, since it uses less digits than its factorization.

91160223563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121394.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 91160223563 in words is "ninety-one billion, one hundred sixty million, two hundred twenty-three thousand, five hundred sixty-three".