85661033153 has 2 divisors, whose sum is σ = 85661033154. Its totient is φ = 85661033152.

The previous prime is 85661033137. The next prime is 85661033167. The reversal of 85661033153 is 35133016658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85338184129 + 322849024 = 292127^2 + 17968^2 .

It is a cyclic number.

It is not a de Polignac number, because 85661033153 - 2⁴ = 85661033137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85661033153.

It is not a weakly prime, because it can be changed into another prime (85661033173) 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, 42830516576 + 42830516577.

It is an arithmetic number, because the mean of its divisors is an integer number (42830516577).

Almost surely, 2^85661033153 is an apocalyptic number.

It is an amenable number.

85661033153 is a deficient number, since it is larger than the sum of its proper divisors (1).

85661033153 is an equidigital number, since it uses as much as digits as its factorization.

85661033153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 85661033153 in words is "eighty-five billion, six hundred sixty-one million, thirty-three thousand, one hundred fifty-three".