744621326172001 has 2 divisors, whose sum is σ = 744621326172002. Its totient is φ = 744621326172000.

The previous prime is 744621326171999. The next prime is 744621326172007. The reversal of 744621326172001 is 100271623126447.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592910373762001 + 151710952410000 = 24349751^2 + 12317100^2 .

It is a cyclic number.

It is not a de Polignac number, because 744621326172001 - 2¹ = 744621326171999 is a prime.

Together with 744621326171999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (744621326172007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372310663086000 + 372310663086001.

It is an arithmetic number, because the mean of its divisors is an integer number (372310663086001).

Almost surely, 2^{744621326172001} is an apocalyptic number.

It is an amenable number.

744621326172001 is a deficient number, since it is larger than the sum of its proper divisors (1).

744621326172001 is an equidigital number, since it uses as much as digits as its factorization.

744621326172001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 46.

Adding to 744621326172001 its reverse (100271623126447), we get a palindrome (844892949298448).

The spelling of 744621326172001 in words is "seven hundred forty-four trillion, six hundred twenty-one billion, three hundred twenty-six million, one hundred seventy-two thousand, one".