91082073067 has 2 divisors, whose sum is σ = 91082073068. Its totient is φ = 91082073066.

The previous prime is 91082073037. The next prime is 91082073073. The reversal of 91082073067 is 76037028019.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91082073067 is a prime.

It is not a weakly prime, because it can be changed into another prime (91082073037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45541036533 + 45541036534.

It is an arithmetic number, because the mean of its divisors is an integer number (45541036534).

Almost surely, 2^91082073067 is an apocalyptic number.

91082073067 is a deficient number, since it is larger than the sum of its proper divisors (1).

91082073067 is an equidigital number, since it uses as much as digits as its factorization.

91082073067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 91082073067 in words is "ninety-one billion, eighty-two million, seventy-three thousand, sixty-seven".