135289889279 has 4 divisors (see below), whose sum is σ = 135976640184. Its totient is φ = 134603138376.

The previous prime is 135289889263. The next prime is 135289889281. The reversal of 135289889279 is 972988982531.

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

It is a cyclic number.

It is not a de Polignac number, because 135289889279 - 2⁴ = 135289889263 is a prime.

It is a super-2 number, since 2×135289889279² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135289889219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343375157 + ... + 343375550.

It is an arithmetic number, because the mean of its divisors is an integer number (33994160046).

Almost surely, 2^135289889279 is an apocalyptic number.

135289889279 is a deficient number, since it is larger than the sum of its proper divisors (686750905).

135289889279 is an equidigital number, since it uses as much as digits as its factorization.

135289889279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686750904.

The product of its digits is 156764160, while the sum is 71.

The spelling of 135289889279 in words is "one hundred thirty-five billion, two hundred eighty-nine million, eight hundred eighty-nine thousand, two hundred seventy-nine".