27431971876 has 9 divisors (see below), whose sum is σ = 48006530481. Its totient is φ = 13715820312.

The previous prime is 27431971873. The next prime is 27431971891. The reversal of 27431971876 is 67817913472.

The square root of 27431971876 is 165626.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19962864100 + 7469107776 = 141290^2 + 86424^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27431971873) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 289846 + ... + 372658.

Almost surely, 2^27431971876 is an apocalyptic number.

27431971876 is the 165626-th square number.

It is an amenable number.

27431971876 is a deficient number, since it is larger than the sum of its proper divisors (20574558605).

27431971876 is an frugal number, since it uses more digits than its factorization.

27431971876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165630 (or 82815 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 55.

The spelling of 27431971876 in words is "twenty-seven billion, four hundred thirty-one million, nine hundred seventy-one thousand, eight hundred seventy-six".