85653618245773 has 2 divisors, whose sum is σ = 85653618245774. Its totient is φ = 85653618245772.

The previous prime is 85653618245743. The next prime is 85653618245831. The reversal of 85653618245773 is 37754281635658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85120312288489 + 533305957284 = 9226067^2 + 730278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85653618245773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85653618245743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42826809122886 + 42826809122887.

It is an arithmetic number, because the mean of its divisors is an integer number (42826809122887).

Almost surely, 2^{85653618245773} is an apocalyptic number.

It is an amenable number.

85653618245773 is a deficient number, since it is larger than the sum of its proper divisors (1).

85653618245773 is an equidigital number, since it uses as much as digits as its factorization.

85653618245773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064000, while the sum is 70.

The spelling of 85653618245773 in words is "eighty-five trillion, six hundred fifty-three billion, six hundred eighteen million, two hundred forty-five thousand, seven hundred seventy-three".