361821384643 has 2 divisors, whose sum is σ = 361821384644. Its totient is φ = 361821384642.

The previous prime is 361821384571. The next prime is 361821384679. The reversal of 361821384643 is 346483128163.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 361821384643 - 2²⁵ = 361787830211 is a prime.

It is not a weakly prime, because it can be changed into another prime (361821384343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180910692321 + 180910692322.

It is an arithmetic number, because the mean of its divisors is an integer number (180910692322).

Almost surely, 2^361821384643 is an apocalyptic number.

361821384643 is a deficient number, since it is larger than the sum of its proper divisors (1).

361821384643 is an equidigital number, since it uses as much as digits as its factorization.

361821384643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 49.

The spelling of 361821384643 in words is "three hundred sixty-one billion, eight hundred twenty-one million, three hundred eighty-four thousand, six hundred forty-three".