126463705189 has 4 divisors (see below), whose sum is σ = 127691508256. Its totient is φ = 125235902124.

The previous prime is 126463705163. The next prime is 126463705271. The reversal of 126463705189 is 981507364621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126463705189 - 2¹¹ = 126463703141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126463700189) 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 in 3 ways as a sum of consecutive naturals, for example, 613901379 + ... + 613901584.

It is an arithmetic number, because the mean of its divisors is an integer number (31922877064).

It is a 1-persistent number, because it is pandigital, but 2⋅126463705189 = 252927410378 is not.

Almost surely, 2^126463705189 is an apocalyptic number.

It is an amenable number.

126463705189 is a deficient number, since it is larger than the sum of its proper divisors (1227803067).

126463705189 is a wasteful number, since it uses less digits than its factorization.

126463705189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227803066.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 126463705189 in words is "one hundred twenty-six billion, four hundred sixty-three million, seven hundred five thousand, one hundred eighty-nine".