27134357521 has 2 divisors, whose sum is σ = 27134357522. Its totient is φ = 27134357520.

The previous prime is 27134357491. The next prime is 27134357533. The reversal of 27134357521 is 12575343172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21276598225 + 5857759296 = 145865^2 + 76536^2 .

It is a cyclic number.

It is not a de Polignac number, because 27134357521 - 2¹¹ = 27134355473 is a prime.

It is not a weakly prime, because it can be changed into another prime (27134357581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13567178760 + 13567178761.

It is an arithmetic number, because the mean of its divisors is an integer number (13567178761).

Almost surely, 2^27134357521 is an apocalyptic number.

It is an amenable number.

27134357521 is a deficient number, since it is larger than the sum of its proper divisors (1).

27134357521 is an equidigital number, since it uses as much as digits as its factorization.

27134357521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 40.

The spelling of 27134357521 in words is "twenty-seven billion, one hundred thirty-four million, three hundred fifty-seven thousand, five hundred twenty-one".