133545544615601 has 2 divisors, whose sum is σ = 133545544615602. Its totient is φ = 133545544615600.

The previous prime is 133545544615579. The next prime is 133545544615649. The reversal of 133545544615601 is 106516445545331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117808447681600 + 15737096934001 = 10853960^2 + 3967001^2 .

It is an emirp because it is prime and its reverse (106516445545331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133545544615601 - 2²² = 133545540421297 is a prime.

It is not a weakly prime, because it can be changed into another prime (133545544615661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66772772307800 + 66772772307801.

It is an arithmetic number, because the mean of its divisors is an integer number (66772772307801).

Almost surely, 2^{133545544615601} is an apocalyptic number.

It is an amenable number.

133545544615601 is a deficient number, since it is larger than the sum of its proper divisors (1).

133545544615601 is an equidigital number, since it uses as much as digits as its factorization.

133545544615601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960000, while the sum is 53.

The spelling of 133545544615601 in words is "one hundred thirty-three trillion, five hundred forty-five billion, five hundred forty-four million, six hundred fifteen thousand, six hundred one".