133464544421605 has 4 divisors (see below), whose sum is σ = 160157453305932. Its totient is φ = 106771635537280.

The previous prime is 133464544421539. The next prime is 133464544421617. The reversal of 133464544421605 is 506124445464331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35181292429924 + 98283251991681 = 5931382^2 + 9913791^2 .

It is not a de Polignac number, because 133464544421605 - 2¹⁵ = 133464544388837 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 13346454442156 + ... + 13346454442165.

It is an arithmetic number, because the mean of its divisors is an integer number (40039363326483).

Almost surely, 2^{133464544421605} is an apocalyptic number.

It is an amenable number.

133464544421605 is a deficient number, since it is larger than the sum of its proper divisors (26692908884327).

133464544421605 is an equidigital number, since it uses as much as digits as its factorization.

133464544421605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26692908884326.

The product of its (nonzero) digits is 16588800, while the sum is 52.

Adding to 133464544421605 its reverse (506124445464331), we get a palindrome (639588989885936).

The spelling of 133464544421605 in words is "one hundred thirty-three trillion, four hundred sixty-four billion, five hundred forty-four million, four hundred twenty-one thousand, six hundred five".