91443995269 has 16 divisors (see below), whose sum is σ = 104132113920. Its totient is φ = 79545312000.

The previous prime is 91443995213. The next prime is 91443995273. The reversal of 91443995269 is 96259934419.

It is not a de Polignac number, because 91443995269 - 2¹⁵ = 91443962501 is a prime.

It is a super-2 number, since 2×91443995269² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91443995869) 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 15 ways as a sum of consecutive naturals, for example, 1476192 + ... + 1536889.

It is an arithmetic number, because the mean of its divisors is an integer number (6508257120).

Almost surely, 2^91443995269 is an apocalyptic number.

It is an amenable number.

91443995269 is a deficient number, since it is larger than the sum of its proper divisors (12688118651).

91443995269 is a wasteful number, since it uses less digits than its factorization.

91443995269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013212.

The product of its digits is 18895680, while the sum is 61.

The spelling of 91443995269 in words is "ninety-one billion, four hundred forty-three million, nine hundred ninety-five thousand, two hundred sixty-nine".