135669013573 has 2 divisors, whose sum is σ = 135669013574. Its totient is φ = 135669013572.

The previous prime is 135669013561. The next prime is 135669013681. The reversal of 135669013573 is 375310966531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132625615684 + 3043397889 = 364178^2 + 55167^2 .

It is a cyclic number.

It is not a de Polignac number, because 135669013573 - 2²⁹ = 135132142661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135669010573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67834506786 + 67834506787.

It is an arithmetic number, because the mean of its divisors is an integer number (67834506787).

Almost surely, 2^135669013573 is an apocalyptic number.

It is an amenable number.

135669013573 is a deficient number, since it is larger than the sum of its proper divisors (1).

135669013573 is an equidigital number, since it uses as much as digits as its factorization.

135669013573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 49.

The spelling of 135669013573 in words is "one hundred thirty-five billion, six hundred sixty-nine million, thirteen thousand, five hundred seventy-three".