135120563666 has 16 divisors (see below), whose sum is σ = 232743555360. Its totient is φ = 58185888480.

The previous prime is 135120563653. The next prime is 135120563687. The reversal of 135120563666 is 666365021531.

It is a Curzon 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, 161627051 + ... + 161627886.

It is an arithmetic number, because the mean of its divisors is an integer number (14546472210).

Almost surely, 2^135120563666 is an apocalyptic number.

135120563666 is a deficient number, since it is larger than the sum of its proper divisors (97622991694).

135120563666 is a wasteful number, since it uses less digits than its factorization.

135120563666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323254969.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 135120563666 in words is "one hundred thirty-five billion, one hundred twenty million, five hundred sixty-three thousand, six hundred sixty-six".