135657834868788 has 12 divisors (see below), whose sum is σ = 316534948027200. Its totient is φ = 45219278289592.

The previous prime is 135657834868741. The next prime is 135657834868819. The reversal of 135657834868788 is 887868438756531.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×135657834868788² (a number of 29 digits) contains 22 as substring.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 5652409786188 + ... + 5652409786211.

It is an arithmetic number, because the mean of its divisors is an integer number (26377912335600).

Almost surely, 2^{135657834868788} is an apocalyptic number.

It is an amenable number.

135657834868788 is an abundant number, since it is smaller than the sum of its proper divisors (180877113158412).

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

135657834868788 is a wasteful number, since it uses less digits than its factorization.

135657834868788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11304819572406 (or 11304819572404 counting only the distinct ones).

The product of its digits is 52022476800, while the sum is 87.

The spelling of 135657834868788 in words is "one hundred thirty-five trillion, six hundred fifty-seven billion, eight hundred thirty-four million, eight hundred sixty-eight thousand, seven hundred eighty-eight".