27712702397 has 2 divisors, whose sum is σ = 27712702398. Its totient is φ = 27712702396.

The previous prime is 27712702361. The next prime is 27712702403. The reversal of 27712702397 is 79320721772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15780635641 + 11932066756 = 125621^2 + 109234^2 .

It is a cyclic number.

It is not a de Polignac number, because 27712702397 - 2⁸ = 27712702141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27712702327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13856351198 + 13856351199.

It is an arithmetic number, because the mean of its divisors is an integer number (13856351199).

Almost surely, 2^27712702397 is an apocalyptic number.

It is an amenable number.

27712702397 is a deficient number, since it is larger than the sum of its proper divisors (1).

27712702397 is an equidigital number, since it uses as much as digits as its factorization.

27712702397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518616, while the sum is 47.

The spelling of 27712702397 in words is "twenty-seven billion, seven hundred twelve million, seven hundred two thousand, three hundred ninety-seven".