135685802561672 has 64 divisors (see below), whose sum is σ = 283996602489600. Its totient is φ = 60240404427840.

The previous prime is 135685802561663. The next prime is 135685802561677. The reversal of 135685802561672 is 276165208586531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 135685802561599 and 135685802561608.

It is not an unprimeable number, because it can be changed into a prime (135685802561677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584084279 + ... + 584316537.

It is an arithmetic number, because the mean of its divisors is an integer number (4437446913900).

Almost surely, 2^{135685802561672} is an apocalyptic number.

It is an amenable number.

135685802561672 is an abundant number, since it is smaller than the sum of its proper divisors (148310799927928).

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

135685802561672 is a wasteful number, since it uses less digits than its factorization.

135685802561672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386706 (or 386702 counting only the distinct ones).

The product of its (nonzero) digits is 145152000, while the sum is 65.

The spelling of 135685802561672 in words is "one hundred thirty-five trillion, six hundred eighty-five billion, eight hundred two million, five hundred sixty-one thousand, six hundred seventy-two".