135556164520 has 64 divisors (see below), whose sum is σ = 350660378880. Its totient is φ = 46198081536.

The previous prime is 135556164517. The next prime is 135556164539. The reversal of 135556164520 is 25461655531.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1402729 + ... + 1496248.

It is an arithmetic number, because the mean of its divisors is an integer number (5479068420).

Almost surely, 2^135556164520 is an apocalyptic number.

135556164520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135556164520 is an abundant number, since it is smaller than the sum of its proper divisors (215104214360).

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

135556164520 is a wasteful number, since it uses less digits than its factorization.

135556164520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899162 (or 2899158 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 135556164520 in words is "one hundred thirty-five billion, five hundred fifty-six million, one hundred sixty-four thousand, five hundred twenty".