126558344879 has 4 divisors (see below), whose sum is σ = 126766843584. Its totient is φ = 126349846176.

The previous prime is 126558344867. The next prime is 126558344881. The reversal of 126558344879 is 978443855621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126558344879 - 2⁴ = 126558344863 is a prime.

It is a super-3 number, since 3×126558344879³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126558344839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104248442 + ... + 104249655.

It is an arithmetic number, because the mean of its divisors is an integer number (31691710896).

Almost surely, 2^126558344879 is an apocalyptic number.

126558344879 is a deficient number, since it is larger than the sum of its proper divisors (208498705).

126558344879 is an equidigital number, since it uses as much as digits as its factorization.

126558344879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208498704.

The product of its digits is 58060800, while the sum is 62.

The spelling of 126558344879 in words is "one hundred twenty-six billion, five hundred fifty-eight million, three hundred forty-four thousand, eight hundred seventy-nine".