27211428317 has 18 divisors (see below), whose sum is σ = 28611342942. Its totient is φ = 25877580784.

The previous prime is 27211428287. The next prime is 27211428353. The reversal of 27211428317 is 71382411272.

It can be written as a sum of positive squares in only one way, i.e., 26839941241 + 371487076 = 163829^2 + 19274^2 .

It is not a de Polignac number, because 27211428317 - 2⁶ = 27211428253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27211428397) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 64943534 + ... + 64943952.

Almost surely, 2^27211428317 is an apocalyptic number.

It is an amenable number.

27211428317 is a deficient number, since it is larger than the sum of its proper divisors (1399914625).

27211428317 is an frugal number, since it uses more digits than its factorization.

27211428317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 735 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

Adding to 27211428317 its reverse (71382411272), we get a palindrome (98593839589).

The spelling of 27211428317 in words is "twenty-seven billion, two hundred eleven million, four hundred twenty-eight thousand, three hundred seventeen".