135133665566 has 4 divisors (see below), whose sum is σ = 202700498352. Its totient is φ = 67566832782.

The previous prime is 135133665481. The next prime is 135133665571. The reversal of 135133665566 is 665566331531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665566331531 = 24181 ⋅27524351.

It is a super-2 number, since 2×135133665566² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33783416390 + ... + 33783416393.

It is an arithmetic number, because the mean of its divisors is an integer number (50675124588).

Almost surely, 2^135133665566 is an apocalyptic number.

135133665566 is a deficient number, since it is larger than the sum of its proper divisors (67566832786).

135133665566 is an equidigital number, since it uses as much as digits as its factorization.

135133665566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67566832785.

The product of its digits is 4374000, while the sum is 50.

The spelling of 135133665566 in words is "one hundred thirty-five billion, one hundred thirty-three million, six hundred sixty-five thousand, five hundred sixty-six".