135205344378 has 48 divisors (see below), whose sum is σ = 315514626336. Its totient is φ = 41596964640.

The previous prime is 135205344361. The next prime is 135205344433. The reversal of 135205344378 is 873443502531.

135205344378 is a `hidden beast` number, since 1 + 3 + 5 + 2 + 0 + 534 + 43 + 78 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2459533 + ... + 2513903.

It is an arithmetic number, because the mean of its divisors is an integer number (6573221382).

Almost surely, 2^135205344378 is an apocalyptic number.

135205344378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

135205344378 is an abundant number, since it is smaller than the sum of its proper divisors (180309281958).

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

135205344378 is a wasteful number, since it uses less digits than its factorization.

135205344378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65019 (or 65016 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 135205344378 in words is "one hundred thirty-five billion, two hundred five million, three hundred forty-four thousand, three hundred seventy-eight".