134432144040661 has 4 divisors (see below), whose sum is σ = 136968599588652. Its totient is φ = 131895688492672.

The previous prime is 134432144040659. The next prime is 134432144040707. The reversal of 134432144040661 is 166040441234431.

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 98352720282436 + 36079423758225 = 9917294^2 + 6006615^2 .

It is a cyclic number.

It is not a de Polignac number, because 134432144040661 - 2¹ = 134432144040659 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 (134432144040631) 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, 1268227773916 + ... + 1268227774021.

It is an arithmetic number, because the mean of its divisors is an integer number (34242149897163).

Almost surely, 2^{134432144040661} is an apocalyptic number.

It is an amenable number.

134432144040661 is a deficient number, since it is larger than the sum of its proper divisors (2536455547991).

134432144040661 is an equidigital number, since it uses as much as digits as its factorization.

134432144040661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536455547990.

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 134432144040661 in words is "one hundred thirty-four trillion, four hundred thirty-two billion, one hundred forty-four million, forty thousand, six hundred sixty-one".