126954323999 has 2 divisors, whose sum is σ = 126954324000. Its totient is φ = 126954323998.

The previous prime is 126954323971. The next prime is 126954324097. The reversal of 126954323999 is 999323459621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126954323999 - 2¹² = 126954319903 is a prime.

It is a super-2 number, since 2×126954323999² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126954323599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63477161999 + 63477162000.

It is an arithmetic number, because the mean of its divisors is an integer number (63477162000).

Almost surely, 2^126954323999 is an apocalyptic number.

126954323999 is a deficient number, since it is larger than the sum of its proper divisors (1).

126954323999 is an equidigital number, since it uses as much as digits as its factorization.

126954323999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28343520, while the sum is 62.

The spelling of 126954323999 in words is "one hundred twenty-six billion, nine hundred fifty-four million, three hundred twenty-three thousand, nine hundred ninety-nine".