27141247381 has 2 divisors, whose sum is σ = 27141247382. Its totient is φ = 27141247380.

The previous prime is 27141247339. The next prime is 27141247417. The reversal of 27141247381 is 18374214172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23705529156 + 3435718225 = 153966^2 + 58615^2 .

It is a cyclic number.

It is not a de Polignac number, because 27141247381 - 2⁷ = 27141247253 is a prime.

It is a super-2 number, since 2×27141247381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27141247181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13570623690 + 13570623691.

It is an arithmetic number, because the mean of its divisors is an integer number (13570623691).

Almost surely, 2^27141247381 is an apocalyptic number.

It is an amenable number.

27141247381 is a deficient number, since it is larger than the sum of its proper divisors (1).

27141247381 is an equidigital number, since it uses as much as digits as its factorization.

27141247381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 40.

The spelling of 27141247381 in words is "twenty-seven billion, one hundred forty-one million, two hundred forty-seven thousand, three hundred eighty-one".