126388874999 has 2 divisors, whose sum is σ = 126388875000. Its totient is φ = 126388874998.

The previous prime is 126388874993. The next prime is 126388875023. The reversal of 126388874999 is 999478883621.

It is a weak prime.

It is an emirp because it is prime and its reverse (999478883621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126388874999 - 2⁸ = 126388874743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126388874993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63194437499 + 63194437500.

It is an arithmetic number, because the mean of its divisors is an integer number (63194437500).

Almost surely, 2^126388874999 is an apocalyptic number.

126388874999 is a deficient number, since it is larger than the sum of its proper divisors (1).

126388874999 is an equidigital number, since it uses as much as digits as its factorization.

126388874999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376233984, while the sum is 74.

The spelling of 126388874999 in words is "one hundred twenty-six billion, three hundred eighty-eight million, eight hundred seventy-four thousand, nine hundred ninety-nine".