27429872873 has 8 divisors (see below), whose sum is σ = 29613534216. Its totient is φ = 25256736000.

The previous prime is 27429872851. The next prime is 27429872881. The reversal of 27429872873 is 37827892472.

It can be written as a sum of positive squares in 4 ways, for example, as 8315980864 + 19113892009 = 91192^2 + 138253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27429872873 - 2¹⁰ = 27429871849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27429872803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2625698 + ... + 2636123.

It is an arithmetic number, because the mean of its divisors is an integer number (3701691777).

Almost surely, 2^27429872873 is an apocalyptic number.

It is an amenable number.

27429872873 is a deficient number, since it is larger than the sum of its proper divisors (2183661343).

27429872873 is a wasteful number, since it uses less digits than its factorization.

27429872873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5262235.

The product of its digits is 18966528, while the sum is 59.

The spelling of 27429872873 in words is "twenty-seven billion, four hundred twenty-nine million, eight hundred seventy-two thousand, eight hundred seventy-three".