135505541154377 has 2 divisors, whose sum is σ = 135505541154378. Its totient is φ = 135505541154376.

The previous prime is 135505541154331. The next prime is 135505541154421. The reversal of 135505541154377 is 773451145505531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100519392676096 + 34986148478281 = 10025936^2 + 5914909^2 .

It is a cyclic number.

It is not a de Polignac number, because 135505541154377 - 2¹² = 135505541150281 is a prime.

It is not a weakly prime, because it can be changed into another prime (135505541154077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67752770577188 + 67752770577189.

It is an arithmetic number, because the mean of its divisors is an integer number (67752770577189).

Almost surely, 2^{135505541154377} is an apocalyptic number.

It is an amenable number.

135505541154377 is a deficient number, since it is larger than the sum of its proper divisors (1).

135505541154377 is an equidigital number, since it uses as much as digits as its factorization.

135505541154377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22050000, while the sum is 56.

The spelling of 135505541154377 in words is "one hundred thirty-five trillion, five hundred five billion, five hundred forty-one million, one hundred fifty-four thousand, three hundred seventy-seven".