20438463283201 has 2 divisors, whose sum is σ = 20438463283202. Its totient is φ = 20438463283200.

The previous prime is 20438463283157. The next prime is 20438463283213. The reversal of 20438463283201 is 10238236483402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20173033273600 + 265430009601 = 4491440^2 + 515199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20438463283201 is a prime.

It is not a weakly prime, because it can be changed into another prime (20438463283291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10219231641600 + 10219231641601.

It is an arithmetic number, because the mean of its divisors is an integer number (10219231641601).

Almost surely, 2^{20438463283201} is an apocalyptic number.

It is an amenable number.

20438463283201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20438463283201 is an equidigital number, since it uses as much as digits as its factorization.

20438463283201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 20438463283201 in words is "twenty trillion, four hundred thirty-eight billion, four hundred sixty-three million, two hundred eighty-three thousand, two hundred one".