91067508243 has 24 divisors (see below), whose sum is σ = 133055963040. Its totient is φ = 60015479040.

The previous prime is 91067508221. The next prime is 91067508253. The reversal of 91067508243 is 34280576019.

It is not a de Polignac number, because 91067508243 - 2¹⁴ = 91067491859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91067508253) 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 23 ways as a sum of consecutive naturals, for example, 317578 + ... + 531968.

It is an arithmetic number, because the mean of its divisors is an integer number (5543998460).

It is a 1-persistent number, because it is pandigital, but 2⋅91067508243 = 182135016486 is not.

Almost surely, 2^91067508243 is an apocalyptic number.

91067508243 is a deficient number, since it is larger than the sum of its proper divisors (41988454797).

91067508243 is a wasteful number, since it uses less digits than its factorization.

91067508243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214939 (or 214936 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 91067508243 in words is "ninety-one billion, sixty-seven million, five hundred eight thousand, two hundred forty-three".