85008380005181 has 2 divisors, whose sum is σ = 85008380005182. Its totient is φ = 85008380005180.

The previous prime is 85008380005139. The next prime is 85008380005217. The reversal of 85008380005181 is 18150008380058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84902403062500 + 105976942681 = 9214250^2 + 325541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85008380005181 is a prime.

It is a super-2 number, since 2×85008380005181² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85008380005781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42504190002590 + 42504190002591.

It is an arithmetic number, because the mean of its divisors is an integer number (42504190002591).

Almost surely, 2^{85008380005181} is an apocalyptic number.

It is an amenable number.

85008380005181 is a deficient number, since it is larger than the sum of its proper divisors (1).

85008380005181 is an equidigital number, since it uses as much as digits as its factorization.

85008380005181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 307200, while the sum is 47.

The spelling of 85008380005181 in words is "eighty-five trillion, eight billion, three hundred eighty million, five thousand, one hundred eighty-one".