134444688889 has 21 divisors (see below), whose sum is σ = 156998811567. Its totient is φ = 115130504664.

The previous prime is 134444688863. The next prime is 134444688913. The reversal of 134444688889 is 988886444431.

The square root of 134444688889 is 366667.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 62867037289 + 71577651600 = 250733^2 + 267540^2 .

It is not a de Polignac number, because 134444688889 - 2²³ = 134436300281 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (134444680889) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 125766247 + ... + 125767315.

Almost surely, 2^134444688889 is an apocalyptic number.

134444688889 is the 366667-th square number.

134444688889 is the 183334-th centered octagonal number.

It is an amenable number.

134444688889 is a deficient number, since it is larger than the sum of its proper divisors (22554122678).

134444688889 is an frugal number, since it uses more digits than its factorization.

134444688889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180 (or 1076 counting only the distinct ones).

The product of its digits is 169869312, while the sum is 67.

The spelling of 134444688889 in words is "one hundred thirty-four billion, four hundred forty-four million, six hundred eighty-eight thousand, eight hundred eighty-nine".