91435944433 has 2 divisors, whose sum is σ = 91435944434. Its totient is φ = 91435944432.

The previous prime is 91435944427. The next prime is 91435944437. The reversal of 91435944433 is 33444953419.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61835774224 + 29600170209 = 248668^2 + 172047^2 .

It is a cyclic number.

It is not a de Polignac number, because 91435944433 - 2²⁹ = 90899073521 is a prime.

It is not a weakly prime, because it can be changed into another prime (91435944437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45717972216 + 45717972217.

It is an arithmetic number, because the mean of its divisors is an integer number (45717972217).

Almost surely, 2^91435944433 is an apocalyptic number.

It is an amenable number.

91435944433 is a deficient number, since it is larger than the sum of its proper divisors (1).

91435944433 is an equidigital number, since it uses as much as digits as its factorization.

91435944433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 49.

The spelling of 91435944433 in words is "ninety-one billion, four hundred thirty-five million, nine hundred forty-four thousand, four hundred thirty-three".