135011780 has 24 divisors (see below), whose sum is σ = 283891608. Its totient is φ = 53934848.

The previous prime is 135011717. The next prime is 135011797. The reversal of 135011780 is 87110531.

It can be written as a sum of positive squares in 4 ways, for example, as 19061956 + 115949824 = 4366^2 + 10768^2 .

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, 13202 + ... + 21078.

It is an arithmetic number, because the mean of its divisors is an integer number (11828817).

Almost surely, 2^135011780 is an apocalyptic number.

135011780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135011780 is an abundant number, since it is smaller than the sum of its proper divisors (148879828).

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

135011780 is a wasteful number, since it uses less digits than its factorization.

135011780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743 (or 8741 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 135011780 is about 11619.4569580510. The cubic root of 135011780 is about 513.0077046925.

The spelling of 135011780 in words is "one hundred thirty-five million, eleven thousand, seven hundred eighty".