27670656977 has 2 divisors, whose sum is σ = 27670656978. Its totient is φ = 27670656976.

The previous prime is 27670656967. The next prime is 27670657031. The reversal of 27670656977 is 77965607672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19447975936 + 8222681041 = 139456^2 + 90679^2 .

It is a cyclic number.

It is not a de Polignac number, because 27670656977 - 2⁶ = 27670656913 is a prime.

It is not a weakly prime, because it can be changed into another prime (27670656967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13835328488 + 13835328489.

It is an arithmetic number, because the mean of its divisors is an integer number (13835328489).

Almost surely, 2^27670656977 is an apocalyptic number.

It is an amenable number.

27670656977 is a deficient number, since it is larger than the sum of its proper divisors (1).

27670656977 is an equidigital number, since it uses as much as digits as its factorization.

27670656977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46675440, while the sum is 62.

The spelling of 27670656977 in words is "twenty-seven billion, six hundred seventy million, six hundred fifty-six thousand, nine hundred seventy-seven".