3663621304601 has 2 divisors, whose sum is σ = 3663621304602. Its totient is φ = 3663621304600.

The previous prime is 3663621304547. The next prime is 3663621304621. The reversal of 3663621304601 is 1064031263663.

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., 3647870803600 + 15750501001 = 1909940^2 + 125501^2 .

It is an emirp because it is prime and its reverse (1064031263663) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3663621304601 is a prime.

It is not a weakly prime, because it can be changed into another prime (3663621304621) 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, 1831810652300 + 1831810652301.

It is an arithmetic number, because the mean of its divisors is an integer number (1831810652301).

Almost surely, 2^{3663621304601} is an apocalyptic number.

It is an amenable number.

3663621304601 is a deficient number, since it is larger than the sum of its proper divisors (1).

3663621304601 is an equidigital number, since it uses as much as digits as its factorization.

3663621304601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 3663621304601 in words is "three trillion, six hundred sixty-three billion, six hundred twenty-one million, three hundred four thousand, six hundred one".