126172952299 has 2 divisors, whose sum is σ = 126172952300. Its totient is φ = 126172952298.

The previous prime is 126172952293. The next prime is 126172952303. The reversal of 126172952299 is 992259271621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126172952299 - 2³³ = 117583017707 is a prime.

It is a super-2 number, since 2×126172952299² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126172952293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63086476149 + 63086476150.

It is an arithmetic number, because the mean of its divisors is an integer number (63086476150).

Almost surely, 2^126172952299 is an apocalyptic number.

126172952299 is a deficient number, since it is larger than the sum of its proper divisors (1).

126172952299 is an equidigital number, since it uses as much as digits as its factorization.

126172952299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 55.

The spelling of 126172952299 in words is "one hundred twenty-six billion, one hundred seventy-two million, nine hundred fifty-two thousand, two hundred ninety-nine".