126668074019 has 2 divisors, whose sum is σ = 126668074020. Its totient is φ = 126668074018.

The previous prime is 126668074007. The next prime is 126668074103. The reversal of 126668074019 is 910470866621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126668074019 - 2¹⁶ = 126668008483 is a prime.

It is a super-2 number, since 2×126668074019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126668074219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63334037009 + 63334037010.

It is an arithmetic number, because the mean of its divisors is an integer number (63334037010).

Almost surely, 2^126668074019 is an apocalyptic number.

126668074019 is a deficient number, since it is larger than the sum of its proper divisors (1).

126668074019 is an equidigital number, since it uses as much as digits as its factorization.

126668074019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 126668074019 in words is "one hundred twenty-six billion, six hundred sixty-eight million, seventy-four thousand, nineteen".