27942368823779 has 2 divisors, whose sum is σ = 27942368823780. Its totient is φ = 27942368823778.

The previous prime is 27942368823619. The next prime is 27942368823791. The reversal of 27942368823779 is 97732886324972.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27942368823779 is a prime.

It is a super-4 number, since 4×27942368823779⁴ (a number of 55 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (27942368823079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13971184411889 + 13971184411890.

It is an arithmetic number, because the mean of its divisors is an integer number (13971184411890).

Almost surely, 2^{27942368823779} is an apocalyptic number.

27942368823779 is a deficient number, since it is larger than the sum of its proper divisors (1).

27942368823779 is an equidigital number, since it uses as much as digits as its factorization.

27942368823779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072577536, while the sum is 77.

The spelling of 27942368823779 in words is "twenty-seven trillion, nine hundred forty-two billion, three hundred sixty-eight million, eight hundred twenty-three thousand, seven hundred seventy-nine".