91443261461117 has 2 divisors, whose sum is σ = 91443261461118. Its totient is φ = 91443261461116.

The previous prime is 91443261461093. The next prime is 91443261461191. The reversal of 91443261461117 is 71116416234419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53089380772516 + 38353880688601 = 7286246^2 + 6193051^2 .

It is a cyclic number.

It is not a de Polignac number, because 91443261461117 - 2⁶ = 91443261461053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91443261451117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45721630730558 + 45721630730559.

It is an arithmetic number, because the mean of its divisors is an integer number (45721630730559).

Almost surely, 2^{91443261461117} is an apocalyptic number.

It is an amenable number.

91443261461117 is a deficient number, since it is larger than the sum of its proper divisors (1).

91443261461117 is an equidigital number, since it uses as much as digits as its factorization.

91443261461117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The spelling of 91443261461117 in words is "ninety-one trillion, four hundred forty-three billion, two hundred sixty-one million, four hundred sixty-one thousand, one hundred seventeen".