83601668573 has 2 divisors, whose sum is σ = 83601668574. Its totient is φ = 83601668572.

The previous prime is 83601668543. The next prime is 83601668701. The reversal of 83601668573 is 37586610638.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57809950969 + 25791717604 = 240437^2 + 160598^2 .

It is a cyclic number.

It is not a de Polignac number, because 83601668573 - 2⁸ = 83601668317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83601668543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41800834286 + 41800834287.

It is an arithmetic number, because the mean of its divisors is an integer number (41800834287).

Almost surely, 2^83601668573 is an apocalyptic number.

It is an amenable number.

83601668573 is a deficient number, since it is larger than the sum of its proper divisors (1).

83601668573 is an equidigital number, since it uses as much as digits as its factorization.

83601668573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 83601668573 in words is "eighty-three billion, six hundred one million, six hundred sixty-eight thousand, five hundred seventy-three".