135566578842 has 8 divisors (see below), whose sum is σ = 271133157696. Its totient is φ = 45188859612.

The previous prime is 135566578837. The next prime is 135566578877. The reversal of 135566578842 is 248875665531.

It is a sphenic number, since it is the product of 3 distinct primes.

135566578842 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11297214898 + ... + 11297214909.

It is an arithmetic number, because the mean of its divisors is an integer number (33891644712).

Almost surely, 2^135566578842 is an apocalyptic number.

135566578842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

135566578842 is a wasteful number, since it uses less digits than its factorization.

135566578842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22594429812.

The product of its digits is 48384000, while the sum is 60.

The spelling of 135566578842 in words is "one hundred thirty-five billion, five hundred sixty-six million, five hundred seventy-eight thousand, eight hundred forty-two".