91645565753 has 8 divisors (see below), whose sum is σ = 104748198720. Its totient is φ = 78545535120.

The previous prime is 91645565747. The next prime is 91645565783. The reversal of 91645565753 is 35756554619.

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

It is a cyclic number.

It is not a de Polignac number, because 91645565753 - 2⁶ = 91645565689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91645565743) 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 7 ways as a sum of consecutive naturals, for example, 574523 + ... + 716496.

It is an arithmetic number, because the mean of its divisors is an integer number (13093524840).

Almost surely, 2^91645565753 is an apocalyptic number.

It is an amenable number.

91645565753 is a deficient number, since it is larger than the sum of its proper divisors (13102632967).

91645565753 is a wasteful number, since it uses less digits than its factorization.

91645565753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301167.

The product of its digits is 17010000, while the sum is 56.

The spelling of 91645565753 in words is "ninety-one billion, six hundred forty-five million, five hundred sixty-five thousand, seven hundred fifty-three".