135372782545561 has 16 divisors (see below), whose sum is σ = 149459481980928. Its totient is φ = 121582779715600.

The previous prime is 135372782545537. The next prime is 135372782545597. The reversal of 135372782545561 is 165545287273531.

It is a cyclic number.

It is not a de Polignac number, because 135372782545561 - 2¹¹ = 135372782543513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135372782545493 and 135372782545502.

It is not an unprimeable number, because it can be changed into a prime (135372782545261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258562116 + ... + 259085146.

It is an arithmetic number, because the mean of its divisors is an integer number (9341217623808).

Almost surely, 2^{135372782545561} is an apocalyptic number.

135372782545561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135372782545561 is a deficient number, since it is larger than the sum of its proper divisors (14086699435367).

135372782545561 is a wasteful number, since it uses less digits than its factorization.

135372782545561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806612.

The product of its digits is 211680000, while the sum is 64.

The spelling of 135372782545561 in words is "one hundred thirty-five trillion, three hundred seventy-two billion, seven hundred eighty-two million, five hundred forty-five thousand, five hundred sixty-one".