133243442003381 has 2 divisors, whose sum is σ = 133243442003382. Its totient is φ = 133243442003380.

The previous prime is 133243442003369. The next prime is 133243442003431. The reversal of 133243442003381 is 183300244342331.

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., 79146093095281 + 54097348908100 = 8896409^2 + 7355090^2 .

It is a cyclic number.

It is not a de Polignac number, because 133243442003381 - 2¹⁰ = 133243442002357 is a prime.

It is a super-2 number, since 2×133243442003381² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133243442003341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66621721001690 + 66621721001691.

It is an arithmetic number, because the mean of its divisors is an integer number (66621721001691).

Almost surely, 2^{133243442003381} is an apocalyptic number.

It is an amenable number.

133243442003381 is a deficient number, since it is larger than the sum of its proper divisors (1).

133243442003381 is an equidigital number, since it uses as much as digits as its factorization.

133243442003381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 133243442003381 in words is "one hundred thirty-three trillion, two hundred forty-three billion, four hundred forty-two million, three thousand, three hundred eighty-one".