85049223361 has 2 divisors, whose sum is σ = 85049223362. Its totient is φ = 85049223360.

The previous prime is 85049223319. The next prime is 85049223433. The reversal of 85049223361 is 16332294058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61476227136 + 23572996225 = 247944^2 + 153535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85049223361 is a prime.

It is not a weakly prime, because it can be changed into another prime (85049233361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42524611680 + 42524611681.

It is an arithmetic number, because the mean of its divisors is an integer number (42524611681).

Almost surely, 2^85049223361 is an apocalyptic number.

It is an amenable number.

85049223361 is a deficient number, since it is larger than the sum of its proper divisors (1).

85049223361 is an equidigital number, since it uses as much as digits as its factorization.

85049223361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 85049223361 in words is "eighty-five billion, forty-nine million, two hundred twenty-three thousand, three hundred sixty-one".