133601230156321 has 2 divisors, whose sum is σ = 133601230156322. Its totient is φ = 133601230156320.

The previous prime is 133601230156319. The next prime is 133601230156337. The reversal of 133601230156321 is 123651032106331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128621910145600 + 4979320010721 = 11341160^2 + 2231439^2 .

It is a cyclic number.

It is not a de Polignac number, because 133601230156321 - 2¹ = 133601230156319 is a prime.

Together with 133601230156319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133601230156351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66800615078160 + 66800615078161.

It is an arithmetic number, because the mean of its divisors is an integer number (66800615078161).

Almost surely, 2^{133601230156321} is an apocalyptic number.

It is an amenable number.

133601230156321 is a deficient number, since it is larger than the sum of its proper divisors (1).

133601230156321 is an equidigital number, since it uses as much as digits as its factorization.

133601230156321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 133601230156321 in words is "one hundred thirty-three trillion, six hundred one billion, two hundred thirty million, one hundred fifty-six thousand, three hundred twenty-one".