27724111253 has 2 divisors, whose sum is σ = 27724111254. Its totient is φ = 27724111252.

The previous prime is 27724111249. The next prime is 27724111333. The reversal of 27724111253 is 35211142772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18961840804 + 8762270449 = 137702^2 + 93607^2 .

It is a cyclic number.

It is not a de Polignac number, because 27724111253 - 2² = 27724111249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27724101253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13862055626 + 13862055627.

It is an arithmetic number, because the mean of its divisors is an integer number (13862055627).

Almost surely, 2^27724111253 is an apocalyptic number.

It is an amenable number.

27724111253 is a deficient number, since it is larger than the sum of its proper divisors (1).

27724111253 is an equidigital number, since it uses as much as digits as its factorization.

27724111253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 35.

The spelling of 27724111253 in words is "twenty-seven billion, seven hundred twenty-four million, one hundred eleven thousand, two hundred fifty-three".