85185422053 has 2 divisors, whose sum is σ = 85185422054. Its totient is φ = 85185422052.

The previous prime is 85185422041. The next prime is 85185422087. The reversal of 85185422053 is 35022458158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44896100769 + 40289321284 = 211887^2 + 200722^2 .

It is a cyclic number.

It is not a de Polignac number, because 85185422053 - 2²¹ = 85183324901 is a prime.

It is a super-2 number, since 2×85185422053² (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 (85185423053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42592711026 + 42592711027.

It is an arithmetic number, because the mean of its divisors is an integer number (42592711027).

Almost surely, 2^85185422053 is an apocalyptic number.

It is an amenable number.

85185422053 is a deficient number, since it is larger than the sum of its proper divisors (1).

85185422053 is an equidigital number, since it uses as much as digits as its factorization.

85185422053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384000, while the sum is 43.

The spelling of 85185422053 in words is "eighty-five billion, one hundred eighty-five million, four hundred twenty-two thousand, fifty-three".