27726678079 has 2 divisors, whose sum is σ = 27726678080. Its totient is φ = 27726678078.

The previous prime is 27726678073. The next prime is 27726678149. The reversal of 27726678079 is 97087662772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27726678079 - 2²¹ = 27724580927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27726678073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13863339039 + 13863339040.

It is an arithmetic number, because the mean of its divisors is an integer number (13863339040).

Almost surely, 2^27726678079 is an apocalyptic number.

27726678079 is a deficient number, since it is larger than the sum of its proper divisors (1).

27726678079 is an equidigital number, since it uses as much as digits as its factorization.

27726678079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24893568, while the sum is 61.

The spelling of 27726678079 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred seventy-eight thousand, seventy-nine".