135437836668 has 24 divisors (see below), whose sum is σ = 316040285568. Its totient is φ = 45143278896.

The previous prime is 135437836643. The next prime is 135437836687. The reversal of 135437836668 is 866638734531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116046 + ... + 533237.

It is an arithmetic number, because the mean of its divisors is an integer number (13168345232).

Almost surely, 2^135437836668 is an apocalyptic number.

It is an amenable number.

135437836668 is an abundant number, since it is smaller than the sum of its proper divisors (180602448900).

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

135437836668 is a wasteful number, since it uses less digits than its factorization.

135437836668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666673 (or 666671 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 60.

The spelling of 135437836668 in words is "one hundred thirty-five billion, four hundred thirty-seven million, eight hundred thirty-six thousand, six hundred sixty-eight".