127515785012663 has 2 divisors, whose sum is σ = 127515785012664. Its totient is φ = 127515785012662.

The previous prime is 127515785012617. The next prime is 127515785012807. The reversal of 127515785012663 is 366210587515721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127515785012663 - 2⁶ = 127515785012599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127515785002663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63757892506331 + 63757892506332.

It is an arithmetic number, because the mean of its divisors is an integer number (63757892506332).

Almost surely, 2^{127515785012663} is an apocalyptic number.

127515785012663 is a deficient number, since it is larger than the sum of its proper divisors (1).

127515785012663 is an equidigital number, since it uses as much as digits as its factorization.

127515785012663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168000, while the sum is 59.

The spelling of 127515785012663 in words is "one hundred twenty-seven trillion, five hundred fifteen billion, seven hundred eighty-five million, twelve thousand, six hundred sixty-three".