133627020661 has 2 divisors, whose sum is σ = 133627020662. Its totient is φ = 133627020660.

The previous prime is 133627020629. The next prime is 133627020679. The reversal of 133627020661 is 166020726331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72713819025 + 60913201636 = 269655^2 + 246806^2 .

It is a cyclic number.

It is not a de Polignac number, because 133627020661 - 2⁵ = 133627020629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133627020661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133627020601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66813510330 + 66813510331.

It is an arithmetic number, because the mean of its divisors is an integer number (66813510331).

Almost surely, 2^133627020661 is an apocalyptic number.

It is an amenable number.

133627020661 is a deficient number, since it is larger than the sum of its proper divisors (1).

133627020661 is an equidigital number, since it uses as much as digits as its factorization.

133627020661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

Adding to 133627020661 its reverse (166020726331), we get a palindrome (299647746992).

The spelling of 133627020661 in words is "one hundred thirty-three billion, six hundred twenty-seven million, twenty thousand, six hundred sixty-one".