722436736643 has 2 divisors, whose sum is σ = 722436736644. Its totient is φ = 722436736642.

The previous prime is 722436736639. The next prime is 722436736739. The reversal of 722436736643 is 346637634227.

It is a weak prime.

It is an emirp because it is prime and its reverse (346637634227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722436736643 - 2² = 722436736639 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (722436736843) 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, 361218368321 + 361218368322.

It is an arithmetic number, because the mean of its divisors is an integer number (361218368322).

Almost surely, 2^722436736643 is an apocalyptic number.

722436736643 is a deficient number, since it is larger than the sum of its proper divisors (1).

722436736643 is an equidigital number, since it uses as much as digits as its factorization.

722436736643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 53.

The spelling of 722436736643 in words is "seven hundred twenty-two billion, four hundred thirty-six million, seven hundred thirty-six thousand, six hundred forty-three".