135320187688 has 16 divisors (see below), whose sum is σ = 289971830880. Its totient is φ = 57994366128.

The previous prime is 135320187661. The next prime is 135320187707. The reversal of 135320187688 is 886781023531.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208215906 + ... + 1208216017.

It is an arithmetic number, because the mean of its divisors is an integer number (18123239430).

Almost surely, 2^135320187688 is an apocalyptic number.

It is an amenable number.

135320187688 is an abundant number, since it is smaller than the sum of its proper divisors (154651643192).

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

135320187688 is a wasteful number, since it uses less digits than its factorization.

135320187688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416431936 (or 2416431932 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 135320187688 in words is "one hundred thirty-five billion, three hundred twenty million, one hundred eighty-seven thousand, six hundred eighty-eight".