91273191119 has 4 divisors (see below), whose sum is σ = 99570753960. Its totient is φ = 82975628280.

The previous prime is 91273191091. The next prime is 91273191133. The reversal of 91273191119 is 91119137219.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91119137219 = 11 ⋅8283557929.

It is a cyclic number.

It is not a de Polignac number, because 91273191119 - 2¹² = 91273187023 is a prime.

It is a super-2 number, since 2×91273191119² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91273191119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91273191169) 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 3 ways as a sum of consecutive naturals, for example, 4148781404 + ... + 4148781425.

It is an arithmetic number, because the mean of its divisors is an integer number (24892688490).

Almost surely, 2^91273191119 is an apocalyptic number.

91273191119 is a deficient number, since it is larger than the sum of its proper divisors (8297562841).

91273191119 is a wasteful number, since it uses less digits than its factorization.

91273191119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8297562840.

The product of its digits is 30618, while the sum is 44.

The spelling of 91273191119 in words is "ninety-one billion, two hundred seventy-three million, one hundred ninety-one thousand, one hundred nineteen".