91268489371 has 4 divisors (see below), whose sum is σ = 91302842232. Its totient is φ = 91234136512.

The previous prime is 91268489369. The next prime is 91268489401. The reversal of 91268489371 is 17398486219.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17398486219 = 19 ⋅915709801.

It is a cyclic number.

It is not a de Polignac number, because 91268489371 - 2¹ = 91268489369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91268489341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17172445 + ... + 17177758.

It is an arithmetic number, because the mean of its divisors is an integer number (22825710558).

Almost surely, 2^91268489371 is an apocalyptic number.

91268489371 is a deficient number, since it is larger than the sum of its proper divisors (34352861).

91268489371 is a wasteful number, since it uses less digits than its factorization.

91268489371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34352860.

The product of its digits is 5225472, while the sum is 58.

The spelling of 91268489371 in words is "ninety-one billion, two hundred sixty-eight million, four hundred eighty-nine thousand, three hundred seventy-one".