90575584717 has 2 divisors, whose sum is σ = 90575584718. Its totient is φ = 90575584716.

The previous prime is 90575584699. The next prime is 90575584739. The reversal of 90575584717 is 71748557509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83848468356 + 6727116361 = 289566^2 + 82019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90575584717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90575582717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45287792358 + 45287792359.

It is an arithmetic number, because the mean of its divisors is an integer number (45287792359).

Almost surely, 2^90575584717 is an apocalyptic number.

It is an amenable number.

90575584717 is a deficient number, since it is larger than the sum of its proper divisors (1).

90575584717 is an equidigital number, since it uses as much as digits as its factorization.

90575584717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12348000, while the sum is 58.

The spelling of 90575584717 in words is "ninety billion, five hundred seventy-five million, five hundred eighty-four thousand, seven hundred seventeen".