135522106412666 has 4 divisors (see below), whose sum is σ = 203283159619002. Its totient is φ = 67761053206332.

The previous prime is 135522106412659. The next prime is 135522106412711. The reversal of 135522106412666 is 666214601225531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 114647451096025 + 20874655316641 = 10707355^2 + 4568879^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33880526603165 + ... + 33880526603168.

Almost surely, 2^{135522106412666} is an apocalyptic number.

135522106412666 is a deficient number, since it is larger than the sum of its proper divisors (67761053206336).

135522106412666 is an equidigital number, since it uses as much as digits as its factorization.

135522106412666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67761053206335.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 135522106412666 in words is "one hundred thirty-five trillion, five hundred twenty-two billion, one hundred six million, four hundred twelve thousand, six hundred sixty-six".