3660121969213 has 2 divisors, whose sum is σ = 3660121969214. Its totient is φ = 3660121969212.

The previous prime is 3660121969199. The next prime is 3660121969247. The reversal of 3660121969213 is 3129691210663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3637099065924 + 23022903289 = 1907118^2 + 151733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3660121969213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3660121969813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1830060984606 + 1830060984607.

It is an arithmetic number, because the mean of its divisors is an integer number (1830060984607).

Almost surely, 2^{3660121969213} is an apocalyptic number.

It is an amenable number.

3660121969213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3660121969213 is an equidigital number, since it uses as much as digits as its factorization.

3660121969213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 49.

The spelling of 3660121969213 in words is "three trillion, six hundred sixty billion, one hundred twenty-one million, nine hundred sixty-nine thousand, two hundred thirteen".