135666355 has 8 divisors (see below), whose sum is σ = 177599664. Its totient is φ = 98666400.

The previous prime is 135666337. The next prime is 135666361. The reversal of 135666355 is 553666531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135666355 - 2⁷ = 135666227 is a prime.

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, 1233276 + ... + 1233385.

It is an arithmetic number, because the mean of its divisors is an integer number (22199958).

Almost surely, 2^135666355 is an apocalyptic number.

135666355 is a deficient number, since it is larger than the sum of its proper divisors (41933309).

135666355 is a wasteful number, since it uses less digits than its factorization.

135666355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466677.

The product of its digits is 243000, while the sum is 40.

The square root of 135666355 is about 11647.5900940924. The cubic root of 135666355 is about 513.8354368796.

The spelling of 135666355 in words is "one hundred thirty-five million, six hundred sixty-six thousand, three hundred fifty-five".