1277323237117 has 2 divisors, whose sum is σ = 1277323237118. Its totient is φ = 1277323237116.

The previous prime is 1277323237111. The next prime is 1277323237189. The reversal of 1277323237117 is 7117323237721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1276744064761 + 579172356 = 1129931^2 + 24066^2 .

It is a cyclic number.

It is not a de Polignac number, because 1277323237117 - 2⁷ = 1277323236989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1277323237111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638661618558 + 638661618559.

It is an arithmetic number, because the mean of its divisors is an integer number (638661618559).

Almost surely, 2^{1277323237117} is an apocalyptic number.

It is an amenable number.

1277323237117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1277323237117 is an equidigital number, since it uses as much as digits as its factorization.

1277323237117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518616, while the sum is 46.

The spelling of 1277323237117 in words is "one trillion, two hundred seventy-seven billion, three hundred twenty-three million, two hundred thirty-seven thousand, one hundred seventeen".