91284986461 has 2 divisors, whose sum is σ = 91284986462. Its totient is φ = 91284986460.

The previous prime is 91284986399. The next prime is 91284986477. The reversal of 91284986461 is 16468948219.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69145332025 + 22139654436 = 262955^2 + 148794^2 .

It is a cyclic number.

It is not a de Polignac number, because 91284986461 - 2⁹ = 91284985949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91284986396 and 91284986405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91284956461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45642493230 + 45642493231.

It is an arithmetic number, because the mean of its divisors is an integer number (45642493231).

Almost surely, 2^91284986461 is an apocalyptic number.

It is an amenable number.

91284986461 is a deficient number, since it is larger than the sum of its proper divisors (1).

91284986461 is an equidigital number, since it uses as much as digits as its factorization.

91284986461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5971968, while the sum is 58.

The spelling of 91284986461 in words is "ninety-one billion, two hundred eighty-four million, nine hundred eighty-six thousand, four hundred sixty-one".