36666670033649 has 2 divisors, whose sum is σ = 36666670033650. Its totient is φ = 36666670033648.

The previous prime is 36666670033633. The next prime is 36666670033727. The reversal of 36666670033649 is 94633007666663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26512046530225 + 10154623503424 = 5148985^2 + 3186632^2 .

It is an emirp because it is prime and its reverse (94633007666663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36666670033649 - 2⁴ = 36666670033633 is a prime.

It is not a weakly prime, because it can be changed into another prime (36666670033619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18333335016824 + 18333335016825.

It is an arithmetic number, because the mean of its divisors is an integer number (18333335016825).

Almost surely, 2^{36666670033649} is an apocalyptic number.

It is an amenable number.

36666670033649 is a deficient number, since it is larger than the sum of its proper divisors (1).

36666670033649 is an equidigital number, since it uses as much as digits as its factorization.

36666670033649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317447424, while the sum is 65.

The spelling of 36666670033649 in words is "thirty-six trillion, six hundred sixty-six billion, six hundred seventy million, thirty-three thousand, six hundred forty-nine".