27675177997 has 2 divisors, whose sum is σ = 27675177998. Its totient is φ = 27675177996.

The previous prime is 27675177953. The next prime is 27675178009. The reversal of 27675177997 is 79977157672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17162572036 + 10512605961 = 131006^2 + 102531^2 .

It is a cyclic number.

It is not a de Polignac number, because 27675177997 - 2¹⁹ = 27674653709 is a prime.

It is a super-3 number, since 3×27675177997³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27675177917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13837588998 + 13837588999.

It is an arithmetic number, because the mean of its divisors is an integer number (13837588999).

Almost surely, 2^27675177997 is an apocalyptic number.

It is an amenable number.

27675177997 is a deficient number, since it is larger than the sum of its proper divisors (1).

27675177997 is an equidigital number, since it uses as much as digits as its factorization.

27675177997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81682020, while the sum is 67.

The spelling of 27675177997 in words is "twenty-seven billion, six hundred seventy-five million, one hundred seventy-seven thousand, nine hundred ninety-seven".