27056755310521 has 2 divisors, whose sum is σ = 27056755310522. Its totient is φ = 27056755310520.

The previous prime is 27056755310491. The next prime is 27056755310587. The reversal of 27056755310521 is 12501355765072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27038585618496 + 18169692025 = 5199864^2 + 134795^2 .

It is a cyclic number.

It is not a de Polignac number, because 27056755310521 - 2¹³ = 27056755302329 is a prime.

It is not a weakly prime, because it can be changed into another prime (27056755313521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13528377655260 + 13528377655261.

It is an arithmetic number, because the mean of its divisors is an integer number (13528377655261).

Almost surely, 2^{27056755310521} is an apocalyptic number.

It is an amenable number.

27056755310521 is a deficient number, since it is larger than the sum of its proper divisors (1).

27056755310521 is an equidigital number, since it uses as much as digits as its factorization.

27056755310521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2205000, while the sum is 49.

The spelling of 27056755310521 in words is "twenty-seven trillion, fifty-six billion, seven hundred fifty-five million, three hundred ten thousand, five hundred twenty-one".