126768647987 has 2 divisors, whose sum is σ = 126768647988. Its totient is φ = 126768647986.

The previous prime is 126768647953. The next prime is 126768648011. The reversal of 126768647987 is 789746867621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126768647987 - 2¹⁴ = 126768631603 is a prime.

It is a super-2 number, since 2×126768647987² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126768647987.

It is not a weakly prime, because it can be changed into another prime (126768647927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63384323993 + 63384323994.

It is an arithmetic number, because the mean of its divisors is an integer number (63384323994).

Almost surely, 2^126768647987 is an apocalyptic number.

126768647987 is a deficient number, since it is larger than the sum of its proper divisors (1).

126768647987 is an equidigital number, since it uses as much as digits as its factorization.

126768647987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 341397504, while the sum is 71.

The spelling of 126768647987 in words is "one hundred twenty-six billion, seven hundred sixty-eight million, six hundred forty-seven thousand, nine hundred eighty-seven".