360663446213621 has 2 divisors, whose sum is σ = 360663446213622. Its totient is φ = 360663446213620.

The previous prime is 360663446213573. The next prime is 360663446213627. The reversal of 360663446213621 is 126312644366063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229833634870225 + 130829811343396 = 15160265^2 + 11438086^2 .

It is an emirp because it is prime and its reverse (126312644366063) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-360663446213621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (360663446213627) 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, 180331723106810 + 180331723106811.

It is an arithmetic number, because the mean of its divisors is an integer number (180331723106811).

Almost surely, 2^{360663446213621} is an apocalyptic number.

It is an amenable number.

360663446213621 is a deficient number, since it is larger than the sum of its proper divisors (1).

360663446213621 is an equidigital number, since it uses as much as digits as its factorization.

360663446213621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13436928, while the sum is 53.

The spelling of 360663446213621 in words is "three hundred sixty trillion, six hundred sixty-three billion, four hundred forty-six million, two hundred thirteen thousand, six hundred twenty-one".