27258042026729 has 4 divisors (see below), whose sum is σ = 27298544318676. Its totient is φ = 27217539734784.

The previous prime is 27258042026707. The next prime is 27258042026741. The reversal of 27258042026729 is 92762024085272.

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 13927861320025 + 13330180706704 = 3732005^2 + 3651052^2 .

It is a cyclic number.

It is not a de Polignac number, because 27258042026729 - 2²⁰ = 27258040978153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27258042026129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20251144964 + ... + 20251146309.

It is an arithmetic number, because the mean of its divisors is an integer number (6824636079669).

Almost surely, 2^{27258042026729} is an apocalyptic number.

It is an amenable number.

27258042026729 is a deficient number, since it is larger than the sum of its proper divisors (40502291947).

27258042026729 is an equidigital number, since it uses as much as digits as its factorization.

27258042026729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40502291946.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 27258042026729 in words is "twenty-seven trillion, two hundred fifty-eight billion, forty-two million, twenty-six thousand, seven hundred twenty-nine".