133531555536101 has 2 divisors, whose sum is σ = 133531555536102. Its totient is φ = 133531555536100.

The previous prime is 133531555536089. The next prime is 133531555536217. The reversal of 133531555536101 is 101635555135331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123993347152900 + 9538208383201 = 11135230^2 + 3088399^2 .

It is a cyclic number.

It is not a de Polignac number, because 133531555536101 - 2¹⁴ = 133531555519717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133531555506101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66765777768050 + 66765777768051.

It is an arithmetic number, because the mean of its divisors is an integer number (66765777768051).

Almost surely, 2^{133531555536101} is an apocalyptic number.

It is an amenable number.

133531555536101 is a deficient number, since it is larger than the sum of its proper divisors (1).

133531555536101 is an equidigital number, since it uses as much as digits as its factorization.

133531555536101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1518750, while the sum is 47.

The spelling of 133531555536101 in words is "one hundred thirty-three trillion, five hundred thirty-one billion, five hundred fifty-five million, five hundred thirty-six thousand, one hundred one".