135243375860 has 24 divisors (see below), whose sum is σ = 284037752040. Its totient is φ = 54092271744.

The previous prime is 135243375811. The next prime is 135243375901. The reversal of 135243375860 is 68573342531.

It can be written as a sum of positive squares in 4 ways, for example, as 5788775056 + 129454600804 = 76084^2 + 359798^2 .

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, 95255 + ... + 528734.

It is an arithmetic number, because the mean of its divisors is an integer number (11834906335).

Almost surely, 2^135243375860 is an apocalyptic number.

135243375860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135243375860 is an abundant number, since it is smaller than the sum of its proper divisors (148794376180).

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

135243375860 is a wasteful number, since it uses less digits than its factorization.

135243375860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634835 (or 634833 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 135243375860 in words is "one hundred thirty-five billion, two hundred forty-three million, three hundred seventy-five thousand, eight hundred sixty".