91087087433 has 16 divisors (see below), whose sum is σ = 95377792512. Its totient is φ = 86882544000.

The previous prime is 91087087411. The next prime is 91087087489. The reversal of 91087087433 is 33478078019.

It is a cyclic number.

It is not a de Polignac number, because 91087087433 - 2⁸ = 91087087177 is a prime.

It is a super-3 number, since 3×91087087433³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91087087493) 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 15 ways as a sum of consecutive naturals, for example, 3542363 + ... + 3567983.

It is an arithmetic number, because the mean of its divisors is an integer number (5961112032).

Almost surely, 2^91087087433 is an apocalyptic number.

It is an amenable number.

91087087433 is a deficient number, since it is larger than the sum of its proper divisors (4290705079).

91087087433 is a wasteful number, since it uses less digits than its factorization.

91087087433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27296.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 91087087433 in words is "ninety-one billion, eighty-seven million, eighty-seven thousand, four hundred thirty-three".