36868246021 has 2 divisors, whose sum is σ = 36868246022. Its totient is φ = 36868246020.

The previous prime is 36868245977. The next prime is 36868246189. The reversal of 36868246021 is 12064286863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35851529025 + 1016716996 = 189345^2 + 31886^2 .

It is an emirp because it is prime and its reverse (12064286863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36868246021 - 2²³ = 36859857413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36868246721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18434123010 + 18434123011.

It is an arithmetic number, because the mean of its divisors is an integer number (18434123011).

Almost surely, 2^36868246021 is an apocalyptic number.

It is an amenable number.

36868246021 is a deficient number, since it is larger than the sum of its proper divisors (1).

36868246021 is an equidigital number, since it uses as much as digits as its factorization.

36868246021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 36868246021 in words is "thirty-six billion, eight hundred sixty-eight million, two hundred forty-six thousand, twenty-one".