126722673173 has 8 divisors (see below), whose sum is σ = 130419255648. Its totient is φ = 123060160944.

The previous prime is 126722673169. The next prime is 126722673241. The reversal of 126722673173 is 371376227621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126722673173 - 2² = 126722673169 is a prime.

It is a super-2 number, since 2×126722673173² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126722675173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8510015 + ... + 8524892.

It is an arithmetic number, because the mean of its divisors is an integer number (16302406956).

Almost surely, 2^126722673173 is an apocalyptic number.

It is an amenable number.

126722673173 is a deficient number, since it is larger than the sum of its proper divisors (3696582475).

126722673173 is a wasteful number, since it uses less digits than its factorization.

126722673173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17035123.

The product of its digits is 889056, while the sum is 47.

The spelling of 126722673173 in words is "one hundred twenty-six billion, seven hundred twenty-two million, six hundred seventy-three thousand, one hundred seventy-three".