91680205151 has 2 divisors, whose sum is σ = 91680205152. Its totient is φ = 91680205150.

The previous prime is 91680205139. The next prime is 91680205187. The reversal of 91680205151 is 15150208619.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91680205151 - 2¹⁸ = 91679943007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91680205051) 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 as a sum of consecutive naturals, namely, 45840102575 + 45840102576.

It is an arithmetic number, because the mean of its divisors is an integer number (45840102576).

Almost surely, 2^91680205151 is an apocalyptic number.

91680205151 is a deficient number, since it is larger than the sum of its proper divisors (1).

91680205151 is an equidigital number, since it uses as much as digits as its factorization.

91680205151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 38.

The spelling of 91680205151 in words is "ninety-one billion, six hundred eighty million, two hundred five thousand, one hundred fifty-one".