135509806590 has 16 divisors (see below), whose sum is σ = 325223535888. Its totient is φ = 36135948416.

The previous prime is 135509806589. The next prime is 135509806603. The reversal of 135509806590 is 95608905531.

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, 2258496747 + ... + 2258496806.

It is an arithmetic number, because the mean of its divisors is an integer number (20326470993).

Almost surely, 2^135509806590 is an apocalyptic number.

135509806590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135509806590 is an abundant number, since it is smaller than the sum of its proper divisors (189713729298).

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

135509806590 is a wasteful number, since it uses less digits than its factorization.

135509806590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516993563.

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 135509806590 in words is "one hundred thirty-five billion, five hundred nine million, eight hundred six thousand, five hundred ninety".