36312808572181 has 2 divisors, whose sum is σ = 36312808572182. Its totient is φ = 36312808572180.

The previous prime is 36312808572017. The next prime is 36312808572191. The reversal of 36312808572181 is 18127580821363.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30522962008081 + 5789846564100 = 5524759^2 + 2406210^2 .

It is a cyclic number.

It is not a de Polignac number, because 36312808572181 - 2²⁹ = 36312271701269 is a prime.

It is a super-2 number, since 2×36312808572181² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36312808572191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18156404286090 + 18156404286091.

It is an arithmetic number, because the mean of its divisors is an integer number (18156404286091).

Almost surely, 2^{36312808572181} is an apocalyptic number.

It is an amenable number.

36312808572181 is a deficient number, since it is larger than the sum of its proper divisors (1).

36312808572181 is an equidigital number, since it uses as much as digits as its factorization.

36312808572181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 36312808572181 in words is "thirty-six trillion, three hundred twelve billion, eight hundred eight million, five hundred seventy-two thousand, one hundred eighty-one".