85581146741 has 2 divisors, whose sum is σ = 85581146742. Its totient is φ = 85581146740.

The previous prime is 85581146713. The next prime is 85581146773. The reversal of 85581146741 is 14764118558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85539285841 + 41860900 = 292471^2 + 6470^2 .

It is a cyclic number.

It is not a de Polignac number, because 85581146741 - 2¹⁴ = 85581130357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85581146741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85581146141) 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, 42790573370 + 42790573371.

It is an arithmetic number, because the mean of its divisors is an integer number (42790573371).

Almost surely, 2^85581146741 is an apocalyptic number.

It is an amenable number.

85581146741 is a deficient number, since it is larger than the sum of its proper divisors (1).

85581146741 is an equidigital number, since it uses as much as digits as its factorization.

85581146741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1075200, while the sum is 50.

The spelling of 85581146741 in words is "eighty-five billion, five hundred eighty-one million, one hundred forty-six thousand, seven hundred forty-one".