135397816326 has 32 divisors (see below), whose sum is σ = 303253217280. Its totient is φ = 44777228328.

The previous prime is 135397816303. The next prime is 135397816387. The reversal of 135397816326 is 623618793531.

135397816326 is a `hidden beast` number, since 1 + 3 + 539 + 7 + 81 + 6 + 3 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9864666 + ... + 9878381.

It is an arithmetic number, because the mean of its divisors is an integer number (9476663040).

Almost surely, 2^135397816326 is an apocalyptic number.

135397816326 is an abundant number, since it is smaller than the sum of its proper divisors (167855400954).

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

135397816326 is a wasteful number, since it uses less digits than its factorization.

135397816326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19743185 (or 19743179 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 135397816326 in words is "one hundred thirty-five billion, three hundred ninety-seven million, eight hundred sixteen thousand, three hundred twenty-six".