27012813475477 has 2 divisors, whose sum is σ = 27012813475478. Its totient is φ = 27012813475476.

The previous prime is 27012813475469. The next prime is 27012813475481. The reversal of 27012813475477 is 77457431821072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24936430462321 + 2076383013156 = 4993639^2 + 1440966^2 .

It is a cyclic number.

It is not a de Polignac number, because 27012813475477 - 2³ = 27012813475469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27012813275477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13506406737738 + 13506406737739.

It is an arithmetic number, because the mean of its divisors is an integer number (13506406737739).

Almost surely, 2^{27012813475477} is an apocalyptic number.

It is an amenable number.

27012813475477 is a deficient number, since it is larger than the sum of its proper divisors (1).

27012813475477 is an equidigital number, since it uses as much as digits as its factorization.

27012813475477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18439680, while the sum is 58.

The spelling of 27012813475477 in words is "twenty-seven trillion, twelve billion, eight hundred thirteen million, four hundred seventy-five thousand, four hundred seventy-seven".