127648765843213 has 2 divisors, whose sum is σ = 127648765843214. Its totient is φ = 127648765843212.

The previous prime is 127648765843129. The next prime is 127648765843243. The reversal of 127648765843213 is 312348567846721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102148659487044 + 25500106356169 = 10106862^2 + 5049763^2 .

It is a cyclic number.

It is not a de Polignac number, because 127648765843213 - 2²¹ = 127648763746061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127648765843243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63824382921606 + 63824382921607.

It is an arithmetic number, because the mean of its divisors is an integer number (63824382921607).

Almost surely, 2^{127648765843213} is an apocalyptic number.

It is an amenable number.

127648765843213 is a deficient number, since it is larger than the sum of its proper divisors (1).

127648765843213 is an equidigital number, since it uses as much as digits as its factorization.

127648765843213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 325140480, while the sum is 67.

The spelling of 127648765843213 in words is "one hundred twenty-seven trillion, six hundred forty-eight billion, seven hundred sixty-five million, eight hundred forty-three thousand, two hundred thirteen".