85495743181 has 2 divisors, whose sum is σ = 85495743182. Its totient is φ = 85495743180.

The previous prime is 85495743173. The next prime is 85495743197. The reversal of 85495743181 is 18134759458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53708062500 + 31787680681 = 231750^2 + 178291^2 .

It is a cyclic number.

It is not a de Polignac number, because 85495743181 - 2³ = 85495743173 is a prime.

It is a super-2 number, since 2×85495743181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85495743101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42747871590 + 42747871591.

It is an arithmetic number, because the mean of its divisors is an integer number (42747871591).

Almost surely, 2^85495743181 is an apocalyptic number.

It is an amenable number.

85495743181 is a deficient number, since it is larger than the sum of its proper divisors (1).

85495743181 is an equidigital number, since it uses as much as digits as its factorization.

85495743181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 55.

The spelling of 85495743181 in words is "eighty-five billion, four hundred ninety-five million, seven hundred forty-three thousand, one hundred eighty-one".