135985387206 has 16 divisors (see below), whose sum is σ = 271976398848. Its totient is φ = 45327525000.

The previous prime is 135985387193. The next prime is 135985387253. The reversal of 135985387206 is 602783589531.

It is a happy number.

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, 121531 + ... + 535481.

It is an arithmetic number, because the mean of its divisors is an integer number (16998524928).

Almost surely, 2^135985387206 is an apocalyptic number.

135985387206 is an abundant number, since it is smaller than the sum of its proper divisors (135991011642).

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

135985387206 is a wasteful number, since it uses less digits than its factorization.

135985387206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468707.

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 135985387206 in words is "one hundred thirty-five billion, nine hundred eighty-five million, three hundred eighty-seven thousand, two hundred six".