135780280285 has 16 divisors (see below), whose sum is σ = 180212333616. Its totient is φ = 97558553088.

The previous prime is 135780280267. The next prime is 135780280319. The reversal of 135780280285 is 582082087531.

It can be written as a sum of positive squares in 8 ways, for example, as 16388608324 + 119391671961 = 128018^2 + 345531^2 .

It is a cyclic number.

It is not a de Polignac number, because 135780280285 - 2⁹ = 135780279773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28226344 + ... + 28231153.

It is an arithmetic number, because the mean of its divisors is an integer number (11263270851).

Almost surely, 2^135780280285 is an apocalyptic number.

It is an amenable number.

135780280285 is a deficient number, since it is larger than the sum of its proper divisors (44432053331).

135780280285 is a wasteful number, since it uses less digits than its factorization.

135780280285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56457552.

The product of its (nonzero) digits is 1075200, while the sum is 49.

The spelling of 135780280285 in words is "one hundred thirty-five billion, seven hundred eighty million, two hundred eighty thousand, two hundred eighty-five".