91313682851 has 2 divisors, whose sum is σ = 91313682852. Its totient is φ = 91313682850.

The previous prime is 91313682847. The next prime is 91313682869. The reversal of 91313682851 is 15828631319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91313682851 - 2² = 91313682847 is a prime.

It is a super-2 number, since 2×91313682851² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91313682796 and 91313682805.

It is not a weakly prime, because it can be changed into another prime (91310682851) 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 as a sum of consecutive naturals, namely, 45656841425 + 45656841426.

It is an arithmetic number, because the mean of its divisors is an integer number (45656841426).

Almost surely, 2^91313682851 is an apocalyptic number.

91313682851 is a deficient number, since it is larger than the sum of its proper divisors (1).

91313682851 is an equidigital number, since it uses as much as digits as its factorization.

91313682851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The spelling of 91313682851 in words is "ninety-one billion, three hundred thirteen million, six hundred eighty-two thousand, eight hundred fifty-one".