27056561624537 has 2 divisors, whose sum is σ = 27056561624538. Its totient is φ = 27056561624536.

The previous prime is 27056561624431. The next prime is 27056561624657. The reversal of 27056561624537 is 73542616565072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14638436692441 + 12418124932096 = 3826021^2 + 3523936^2 .

It is a cyclic number.

It is not a de Polignac number, because 27056561624537 - 2¹⁰ = 27056561623513 is a prime.

It is not a weakly prime, because it can be changed into another prime (27056561324537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13528280812268 + 13528280812269.

It is an arithmetic number, because the mean of its divisors is an integer number (13528280812269).

Almost surely, 2^{27056561624537} is an apocalyptic number.

It is an amenable number.

27056561624537 is a deficient number, since it is larger than the sum of its proper divisors (1).

27056561624537 is an equidigital number, since it uses as much as digits as its factorization.

27056561624537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504000, while the sum is 59.

The spelling of 27056561624537 in words is "twenty-seven trillion, fifty-six billion, five hundred sixty-one million, six hundred twenty-four thousand, five hundred thirty-seven".