27577474076557 has 2 divisors, whose sum is σ = 27577474076558. Its totient is φ = 27577474076556.

The previous prime is 27577474076549. The next prime is 27577474076567. The reversal of 27577474076557 is 75567047477572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27526087533961 + 51386542596 = 5246531^2 + 226686^2 .

It is a cyclic number.

It is not a de Polignac number, because 27577474076557 - 2³ = 27577474076549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27577474076557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27577474076567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13788737038278 + 13788737038279.

It is an arithmetic number, because the mean of its divisors is an integer number (13788737038279).

Almost surely, 2^{27577474076557} is an apocalyptic number.

It is an amenable number.

27577474076557 is a deficient number, since it is larger than the sum of its proper divisors (1).

27577474076557 is an equidigital number, since it uses as much as digits as its factorization.

27577474076557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2823576000, while the sum is 73.

The spelling of 27577474076557 in words is "twenty-seven trillion, five hundred seventy-seven billion, four hundred seventy-four million, seventy-six thousand, five hundred fifty-seven".