127693451257 has 2 divisors, whose sum is σ = 127693451258. Its totient is φ = 127693451256.

The previous prime is 127693451243. The next prime is 127693451293. The reversal of 127693451257 is 752154396721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127588982416 + 104468841 = 357196^2 + 10221^2 .

It is a cyclic number.

It is not a de Polignac number, because 127693451257 - 2⁷ = 127693451129 is a prime.

It is not a weakly prime, because it can be changed into another prime (127693458257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63846725628 + 63846725629.

It is an arithmetic number, because the mean of its divisors is an integer number (63846725629).

Almost surely, 2^127693451257 is an apocalyptic number.

It is an amenable number.

127693451257 is a deficient number, since it is larger than the sum of its proper divisors (1).

127693451257 is an equidigital number, since it uses as much as digits as its factorization.

127693451257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 52.

The spelling of 127693451257 in words is "one hundred twenty-seven billion, six hundred ninety-three million, four hundred fifty-one thousand, two hundred fifty-seven".