135528666439 has 8 divisors (see below), whose sum is σ = 142294638960. Its totient is φ = 128902198656.

The previous prime is 135528666431. The next prime is 135528666473. The reversal of 135528666439 is 934666825531.

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

It is a cyclic number.

It is not a de Polignac number, because 135528666439 - 2³ = 135528666431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135528666431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34874194 + ... + 34878079.

It is an arithmetic number, because the mean of its divisors is an integer number (17786829870).

Almost surely, 2^135528666439 is an apocalyptic number.

135528666439 is a deficient number, since it is larger than the sum of its proper divisors (6765972521).

135528666439 is an equidigital number, since it uses as much as digits as its factorization.

135528666439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69752369.

The product of its digits is 27993600, while the sum is 58.

The spelling of 135528666439 in words is "one hundred thirty-five billion, five hundred twenty-eight million, six hundred sixty-six thousand, four hundred thirty-nine".