135681056571042 has 96 divisors (see below), whose sum is σ = 336831404337792. Its totient is φ = 40715883926784.

The previous prime is 135681056571029. The next prime is 135681056571079. The reversal of 135681056571042 is 240175650186531.

135681056571042 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 8 + 1 + 0 + 565 + 71 + 0 + 4 + 2 = 666.

It is a super-2 number, since 2×135681056571042² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 135681056571042.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 356816533 + ... + 357196584.

It is an arithmetic number, because the mean of its divisors is an integer number (3508660461852).

Almost surely, 2^{135681056571042} is an apocalyptic number.

135681056571042 is an abundant number, since it is smaller than the sum of its proper divisors (201150347766750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135681056571042 is a wasteful number, since it uses less digits than its factorization.

135681056571042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714013174 (or 714013162 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 54.

The spelling of 135681056571042 in words is "one hundred thirty-five trillion, six hundred eighty-one billion, fifty-six million, five hundred seventy-one thousand, forty-two".