91316756722 has 8 divisors (see below), whose sum is σ = 139559571756. Its totient is φ = 44796899472.

The previous prime is 91316756717. The next prime is 91316756723. The reversal of 91316756722 is 22765761319.

It can be written as a sum of positive squares in 2 ways, for example, as 90137452441 + 1179304281 = 300229^2 + 34341^2 .

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

It is not an unprimeable number, because it can be changed into a prime (91316756723) 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 3 ways as a sum of consecutive naturals, for example, 430739313 + ... + 430739524.

Almost surely, 2^91316756722 is an apocalyptic number.

91316756722 is a deficient number, since it is larger than the sum of its proper divisors (48242815034).

91316756722 is a wasteful number, since it uses less digits than its factorization.

91316756722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861478892.

The product of its digits is 952560, while the sum is 49.

The spelling of 91316756722 in words is "ninety-one billion, three hundred sixteen million, seven hundred fifty-six thousand, seven hundred twenty-two".