1623664003201 has 2 divisors, whose sum is σ = 1623664003202. Its totient is φ = 1623664003200.

The previous prime is 1623664003141. The next prime is 1623664003343. The reversal of 1623664003201 is 1023004663261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1392494401600 + 231169601601 = 1180040^2 + 480801^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623664003201 - 2²⁷ = 1623529785473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1623664063201) 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, 811832001600 + 811832001601.

It is an arithmetic number, because the mean of its divisors is an integer number (811832001601).

Almost surely, 2^{1623664003201} is an apocalyptic number.

It is an amenable number.

1623664003201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623664003201 is an equidigital number, since it uses as much as digits as its factorization.

1623664003201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 1623664003201 its reverse (1023004663261), we get a palindrome (2646668666462).

The spelling of 1623664003201 in words is "one trillion, six hundred twenty-three billion, six hundred sixty-four million, three thousand, two hundred one".