134056641665 has 4 divisors (see below), whose sum is σ = 160867970004. Its totient is φ = 107245313328.

The previous prime is 134056641571. The next prime is 134056641683. The reversal of 134056641665 is 566146650431.

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 21950200336 + 112106441329 = 148156^2 + 334823^2 .

It is a cyclic number.

It is not a de Polignac number, because 134056641665 - 2⁸ = 134056641409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13405664162 + ... + 13405664171.

It is an arithmetic number, because the mean of its divisors is an integer number (40216992501).

Almost surely, 2^134056641665 is an apocalyptic number.

It is an amenable number.

134056641665 is a deficient number, since it is larger than the sum of its proper divisors (26811328339).

134056641665 is an equidigital number, since it uses as much as digits as its factorization.

134056641665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26811328338.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 134056641665 in words is "one hundred thirty-four billion, fifty-six million, six hundred forty-one thousand, six hundred sixty-five".