126843451773 has 4 divisors (see below), whose sum is σ = 169124602368. Its totient is φ = 84562301180.

The previous prime is 126843451753. The next prime is 126843451783. The reversal of 126843451773 is 377154348621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 377154348621 = 3 ⋅125718116207.

It is a cyclic number.

It is not a de Polignac number, because 126843451773 - 2¹² = 126843447677 is a prime.

It is a super-2 number, since 2×126843451773² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126843451723) 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, 21140575293 + ... + 21140575298.

It is an arithmetic number, because the mean of its divisors is an integer number (42281150592).

Almost surely, 2^126843451773 is an apocalyptic number.

It is an amenable number.

126843451773 is a deficient number, since it is larger than the sum of its proper divisors (42281150595).

126843451773 is an equidigital number, since it uses as much as digits as its factorization.

126843451773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42281150594.

The product of its digits is 3386880, while the sum is 51.

The spelling of 126843451773 in words is "one hundred twenty-six billion, eight hundred forty-three million, four hundred fifty-one thousand, seven hundred seventy-three".