27731842273 has 2 divisors, whose sum is σ = 27731842274. Its totient is φ = 27731842272.

The previous prime is 27731842253. The next prime is 27731842283. The reversal of 27731842273 is 37224813772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13988265984 + 13743576289 = 118272^2 + 117233^2 .

It is a cyclic number.

It is not a de Polignac number, because 27731842273 - 2²⁹ = 27194971361 is a prime.

It is not a weakly prime, because it can be changed into another prime (27731842253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13865921136 + 13865921137.

It is an arithmetic number, because the mean of its divisors is an integer number (13865921137).

Almost surely, 2^27731842273 is an apocalyptic number.

It is an amenable number.

27731842273 is a deficient number, since it is larger than the sum of its proper divisors (1).

27731842273 is an equidigital number, since it uses as much as digits as its factorization.

27731842273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 46.

The spelling of 27731842273 in words is "twenty-seven billion, seven hundred thirty-one million, eight hundred forty-two thousand, two hundred seventy-three".