91433168327077 has 2 divisors, whose sum is σ = 91433168327078. Its totient is φ = 91433168327076.

The previous prime is 91433168327069. The next prime is 91433168327147. The reversal of 91433168327077 is 77072386133419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90023073826401 + 1410094500676 = 9488049^2 + 1187474^2 .

It is a cyclic number.

It is not a de Polignac number, because 91433168327077 - 2³ = 91433168327069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91433168727077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45716584163538 + 45716584163539.

It is an arithmetic number, because the mean of its divisors is an integer number (45716584163539).

Almost surely, 2^{91433168327077} is an apocalyptic number.

It is an amenable number.

91433168327077 is a deficient number, since it is larger than the sum of its proper divisors (1).

91433168327077 is an equidigital number, since it uses as much as digits as its factorization.

91433168327077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32006016, while the sum is 61.

The spelling of 91433168327077 in words is "ninety-one trillion, four hundred thirty-three billion, one hundred sixty-eight million, three hundred twenty-seven thousand, seventy-seven".