91542350573 has 2 divisors, whose sum is σ = 91542350574. Its totient is φ = 91542350572.

The previous prime is 91542350489. The next prime is 91542350579. The reversal of 91542350573 is 37505324519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88272569449 + 3269781124 = 297107^2 + 57182^2 .

It is a cyclic number.

It is not a de Polignac number, because 91542350573 - 2¹² = 91542346477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91542350579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45771175286 + 45771175287.

It is an arithmetic number, because the mean of its divisors is an integer number (45771175287).

Almost surely, 2^91542350573 is an apocalyptic number.

It is an amenable number.

91542350573 is a deficient number, since it is larger than the sum of its proper divisors (1).

91542350573 is an equidigital number, since it uses as much as digits as its factorization.

91542350573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567000, while the sum is 44.

The spelling of 91542350573 in words is "ninety-one billion, five hundred forty-two million, three hundred fifty thousand, five hundred seventy-three".