134664779089 has 3 divisors (see below), whose sum is σ = 134665146057. Its totient is φ = 134664412122.

The previous prime is 134664779077. The next prime is 134664779111. The reversal of 134664779089 is 980977466431.

The square root of 134664779089 is 366967.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 134664779089 - 2¹⁷ = 134664648017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134664779089.

It is not an unprimeable number, because it can be changed into a prime (134664779189) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 183484 + ... + 550450.

It is an arithmetic number, because the mean of its divisors is an integer number (44888382019).

Almost surely, 2^134664779089 is an apocalyptic number.

134664779089 is the 366967-th square number.

134664779089 is the 183484-th centered octagonal number.

It is an amenable number.

134664779089 is a deficient number, since it is larger than the sum of its proper divisors (366968).

134664779089 is an frugal number, since it uses more digits than its factorization.

134664779089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733934 (or 366967 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 64.

Multiplying 134664779089 by its sum of digits (64), we get a square (8618545861696 = 2935736²).

The spelling of 134664779089 in words is "one hundred thirty-four billion, six hundred sixty-four million, seven hundred seventy-nine thousand, eighty-nine".