36217885671881 has 2 divisors, whose sum is σ = 36217885671882. Its totient is φ = 36217885671880.

The previous prime is 36217885671853. The next prime is 36217885671937. The reversal of 36217885671881 is 18817658871263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22799584061881 + 13418301610000 = 4774891^2 + 3663100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36217885671881 is a prime.

It is a super-2 number, since 2×36217885671881² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (36217885671841) 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, 18108942835940 + 18108942835941.

It is an arithmetic number, because the mean of its divisors is an integer number (18108942835941).

Almost surely, 2^{36217885671881} is an apocalyptic number.

It is an amenable number.

36217885671881 is a deficient number, since it is larger than the sum of its proper divisors (1).

36217885671881 is an equidigital number, since it uses as much as digits as its factorization.

36217885671881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216760320, while the sum is 71.

The spelling of 36217885671881 in words is "thirty-six trillion, two hundred seventeen billion, eight hundred eighty-five million, six hundred seventy-one thousand, eight hundred eighty-one".