133666530451361 has 2 divisors, whose sum is σ = 133666530451362. Its totient is φ = 133666530451360.

The previous prime is 133666530451313. The next prime is 133666530451457. The reversal of 133666530451361 is 163154035666331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119430888261136 + 14235642190225 = 10928444^2 + 3773015^2 .

It is a cyclic number.

It is not a de Polignac number, because 133666530451361 - 2⁶ = 133666530451297 is a prime.

It is not a weakly prime, because it can be changed into another prime (133666530451301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66833265225680 + 66833265225681.

It is an arithmetic number, because the mean of its divisors is an integer number (66833265225681).

Almost surely, 2^{133666530451361} is an apocalyptic number.

It is an amenable number.

133666530451361 is a deficient number, since it is larger than the sum of its proper divisors (1).

133666530451361 is an equidigital number, since it uses as much as digits as its factorization.

133666530451361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10497600, while the sum is 53.

The spelling of 133666530451361 in words is "one hundred thirty-three trillion, six hundred sixty-six billion, five hundred thirty million, four hundred fifty-one thousand, three hundred sixty-one".