27129292172 has 24 divisors (see below), whose sum is σ = 50274048384. Its totient is φ = 12765439232.

The previous prime is 27129292129. The next prime is 27129292187.

27129292172 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201733 + ... + 1224099.

It is an arithmetic number, because the mean of its divisors is an integer number (2094752016).

Almost surely, 2^27129292172 is an apocalyptic number.

It is an amenable number.

27129292172 is a deficient number, since it is larger than the sum of its proper divisors (23144756212).

27129292172 is a wasteful number, since it uses less digits than its factorization.

27129292172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40225 (or 40223 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The spelling of 27129292172 in words is "twenty-seven billion, one hundred twenty-nine million, two hundred ninety-two thousand, one hundred seventy-two".