85160446661 has 2 divisors, whose sum is σ = 85160446662. Its totient is φ = 85160446660.

The previous prime is 85160446643. The next prime is 85160446669. The reversal of 85160446661 is 16664406158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65502724225 + 19657722436 = 255935^2 + 140206^2 .

It is a cyclic number.

It is not a de Polignac number, because 85160446661 - 2⁶ = 85160446597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85160446669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42580223330 + 42580223331.

It is an arithmetic number, because the mean of its divisors is an integer number (42580223331).

Almost surely, 2^85160446661 is an apocalyptic number.

It is an amenable number.

85160446661 is a deficient number, since it is larger than the sum of its proper divisors (1).

85160446661 is an equidigital number, since it uses as much as digits as its factorization.

85160446661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 85160446661 in words is "eighty-five billion, one hundred sixty million, four hundred forty-six thousand, six hundred sixty-one".