135784281372 has 24 divisors (see below), whose sum is σ = 317604646800. Its totient is φ = 45150761856.

The previous prime is 135784281331. The next prime is 135784281389. The reversal of 135784281372 is 273182487531.

135784281372 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 13828047 + ... + 13837862.

It is an arithmetic number, because the mean of its divisors is an integer number (13233526950).

Almost surely, 2^135784281372 is an apocalyptic number.

135784281372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135784281372 is an abundant number, since it is smaller than the sum of its proper divisors (181820365428).

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

135784281372 is a wasteful number, since it uses less digits than its factorization.

135784281372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27666325 (or 27666323 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 51.

The spelling of 135784281372 in words is "one hundred thirty-five billion, seven hundred eighty-four million, two hundred eighty-one thousand, three hundred seventy-two".