27726672473 has 2 divisors, whose sum is σ = 27726672474. Its totient is φ = 27726672472.

The previous prime is 27726672451. The next prime is 27726672481. The reversal of 27726672473 is 37427662772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23385443929 + 4341228544 = 152923^2 + 65888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27726672473 is a prime.

It is not a weakly prime, because it can be changed into another prime (27726972473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13863336236 + 13863336237.

It is an arithmetic number, because the mean of its divisors is an integer number (13863336237).

Almost surely, 2^27726672473 is an apocalyptic number.

It is an amenable number.

27726672473 is a deficient number, since it is larger than the sum of its proper divisors (1).

27726672473 is an equidigital number, since it uses as much as digits as its factorization.

27726672473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8297856, while the sum is 53.

The spelling of 27726672473 in words is "twenty-seven billion, seven hundred twenty-six million, six hundred seventy-two thousand, four hundred seventy-three".