27454668977 has 2 divisors, whose sum is σ = 27454668978. Its totient is φ = 27454668976.

The previous prime is 27454668953. The next prime is 27454669013. The reversal of 27454668977 is 77986645472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14748645136 + 12706023841 = 121444^2 + 112721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27454668977 is a prime.

It is not a weakly prime, because it can be changed into another prime (27454668907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13727334488 + 13727334489.

It is an arithmetic number, because the mean of its divisors is an integer number (13727334489).

Almost surely, 2^27454668977 is an apocalyptic number.

It is an amenable number.

27454668977 is a deficient number, since it is larger than the sum of its proper divisors (1).

27454668977 is an equidigital number, since it uses as much as digits as its factorization.

27454668977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142248960, while the sum is 65.

The spelling of 27454668977 in words is "twenty-seven billion, four hundred fifty-four million, six hundred sixty-eight thousand, nine hundred seventy-seven".