135368778148208 has 40 divisors (see below), whose sum is σ = 286239938440176. Its totient is φ = 61505549580800.

The previous prime is 135368778148151. The next prime is 135368778148259. The reversal of 135368778148208 is 802841877863531.

It is a super-2 number, since 2×135368778148208² (a number of 29 digits) contains 22 as substring.

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, 160285223 + ... + 161127558.

Almost surely, 2^{135368778148208} is an apocalyptic number.

It is an amenable number.

135368778148208 is an abundant number, since it is smaller than the sum of its proper divisors (150871160291968).

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

135368778148208 is a wasteful number, since it uses less digits than its factorization.

135368778148208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321415193 (or 321415187 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 71.

The spelling of 135368778148208 in words is "one hundred thirty-five trillion, three hundred sixty-eight billion, seven hundred seventy-eight million, one hundred forty-eight thousand, two hundred eight".