127357212517 has 2 divisors, whose sum is σ = 127357212518. Its totient is φ = 127357212516.

The previous prime is 127357212481. The next prime is 127357212533. The reversal of 127357212517 is 715212753721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119997116836 + 7360095681 = 346406^2 + 85791^2 .

It is a cyclic number.

It is not a de Polignac number, because 127357212517 - 2²³ = 127348823909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127357210517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63678606258 + 63678606259.

It is an arithmetic number, because the mean of its divisors is an integer number (63678606259).

Almost surely, 2^127357212517 is an apocalyptic number.

It is an amenable number.

127357212517 is a deficient number, since it is larger than the sum of its proper divisors (1).

127357212517 is an equidigital number, since it uses as much as digits as its factorization.

127357212517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205800, while the sum is 43.

The spelling of 127357212517 in words is "one hundred twenty-seven billion, three hundred fifty-seven million, two hundred twelve thousand, five hundred seventeen".