91609835361 has 8 divisors (see below), whose sum is σ = 133250669664. Its totient is φ = 55521112320.

The previous prime is 91609835353. The next prime is 91609835363. The reversal of 91609835361 is 16353890619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91609835361 - 2³ = 91609835353 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (91609835363) 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 7 ways as a sum of consecutive naturals, for example, 1388027776 + ... + 1388027841.

It is an arithmetic number, because the mean of its divisors is an integer number (16656333708).

Almost surely, 2^91609835361 is an apocalyptic number.

It is an amenable number.

91609835361 is a deficient number, since it is larger than the sum of its proper divisors (41640834303).

91609835361 is a wasteful number, since it uses less digits than its factorization.

91609835361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776055631.

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 91609835361 in words is "ninety-one billion, six hundred nine million, eight hundred thirty-five thousand, three hundred sixty-one".