91886336041 has 2 divisors, whose sum is σ = 91886336042. Its totient is φ = 91886336040.

The previous prime is 91886336029. The next prime is 91886336057. The reversal of 91886336041 is 14063368819.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46740710416 + 45145625625 = 216196^2 + 212475^2 .

It is a cyclic number.

It is not a de Polignac number, because 91886336041 - 2¹¹ = 91886333993 is a prime.

It is not a weakly prime, because it can be changed into another prime (91886336011) 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, 45943168020 + 45943168021.

It is an arithmetic number, because the mean of its divisors is an integer number (45943168021).

Almost surely, 2^91886336041 is an apocalyptic number.

It is an amenable number.

91886336041 is a deficient number, since it is larger than the sum of its proper divisors (1).

91886336041 is an equidigital number, since it uses as much as digits as its factorization.

91886336041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 91886336041 in words is "ninety-one billion, eight hundred eighty-six million, three hundred thirty-six thousand, forty-one".