134505004553021 has 4 divisors (see below), whose sum is σ = 136016296739100. Its totient is φ = 132993712366944.

The previous prime is 134505004553009. The next prime is 134505004553053. The reversal of 134505004553021 is 120355400505431.

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 75228648168025 + 59276356384996 = 8673445^2 + 7699114^2 .

It is a cyclic number.

It is not a de Polignac number, because 134505004553021 - 2¹⁰ = 134505004551997 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 (134505004573021) by changing a digit.

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, 755646092906 + ... + 755646093083.

It is an arithmetic number, because the mean of its divisors is an integer number (34004074184775).

Almost surely, 2^{134505004553021} is an apocalyptic number.

It is an amenable number.

134505004553021 is a deficient number, since it is larger than the sum of its proper divisors (1511292186079).

134505004553021 is an equidigital number, since it uses as much as digits as its factorization.

134505004553021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511292186078.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 134505004553021 in words is "one hundred thirty-four trillion, five hundred five billion, four million, five hundred fifty-three thousand, twenty-one".