126503837026499 has 2 divisors, whose sum is σ = 126503837026500. Its totient is φ = 126503837026498.

The previous prime is 126503837026423. The next prime is 126503837026517. The reversal of 126503837026499 is 994620738305621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126503837026499 is a prime.

It is not a weakly prime, because it can be changed into another prime (126503837025499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63251918513249 + 63251918513250.

It is an arithmetic number, because the mean of its divisors is an integer number (63251918513250).

It is a 1-persistent number, because it is pandigital, but 2⋅126503837026499 = 253007674052998 is not.

Almost surely, 2^{126503837026499} is an apocalyptic number.

126503837026499 is a deficient number, since it is larger than the sum of its proper divisors (1).

126503837026499 is an equidigital number, since it uses as much as digits as its factorization.

126503837026499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117573120, while the sum is 65.

The spelling of 126503837026499 in words is "one hundred twenty-six trillion, five hundred three billion, eight hundred thirty-seven million, twenty-six thousand, four hundred ninety-nine".