20344663156133 has 2 divisors, whose sum is σ = 20344663156134. Its totient is φ = 20344663156132.

The previous prime is 20344663156123. The next prime is 20344663156141. The reversal of 20344663156133 is 33165136644302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14082021770404 + 6262641385729 = 3752602^2 + 2502527^2 .

It is a cyclic number.

It is not a de Polignac number, because 20344663156133 - 2⁴⁴ = 2752477111717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20344663156123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172331578066 + 10172331578067.

It is an arithmetic number, because the mean of its divisors is an integer number (10172331578067).

Almost surely, 2^{20344663156133} is an apocalyptic number.

It is an amenable number.

20344663156133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344663156133 is an equidigital number, since it uses as much as digits as its factorization.

20344663156133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 47.

The spelling of 20344663156133 in words is "twenty trillion, three hundred forty-four billion, six hundred sixty-three million, one hundred fifty-six thousand, one hundred thirty-three".