126915793273 has 4 divisors (see below), whose sum is σ = 130011300468. Its totient is φ = 123820286080.

The previous prime is 126915793271. The next prime is 126915793307. The reversal of 126915793273 is 372397519621.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3664244089 + 123251549184 = 60533^2 + 351072^2 .

It is a cyclic number.

It is not a de Polignac number, because 126915793273 - 2¹ = 126915793271 is a prime.

It is a super-2 number, since 2×126915793273² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126915793271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547753536 + ... + 1547753617.

It is an arithmetic number, because the mean of its divisors is an integer number (32502825117).

Almost surely, 2^126915793273 is an apocalyptic number.

It is an amenable number.

126915793273 is a deficient number, since it is larger than the sum of its proper divisors (3095507195).

126915793273 is an equidigital number, since it uses as much as digits as its factorization.

126915793273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095507194.

The product of its digits is 4286520, while the sum is 55.

The spelling of 126915793273 in words is "one hundred twenty-six billion, nine hundred fifteen million, seven hundred ninety-three thousand, two hundred seventy-three".