96561991727 has 4 divisors (see below), whose sum is σ = 97095483576. Its totient is φ = 96028499880.

The previous prime is 96561991639. The next prime is 96561991751. The reversal of 96561991727 is 72719916569.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 96561991727 - 2²⁴ = 96545214511 is a prime.

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 96561991727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96561991777) 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, 266745653 + ... + 266746014.

It is an arithmetic number, because the mean of its divisors is an integer number (24273870894).

Almost surely, 2^96561991727 is an apocalyptic number.

96561991727 is a deficient number, since it is larger than the sum of its proper divisors (533491849).

96561991727 is a wasteful number, since it uses less digits than its factorization.

96561991727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533491848.

The product of its digits is 12859560, while the sum is 62.

The spelling of 96561991727 in words is "ninety-six billion, five hundred sixty-one million, nine hundred ninety-one thousand, seven hundred twenty-seven".