126176427217 has 2 divisors, whose sum is σ = 126176427218. Its totient is φ = 126176427216.

The previous prime is 126176427211. The next prime is 126176427241. The reversal of 126176427217 is 712724671621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120437455681 + 5738971536 = 347041^2 + 75756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126176427217 is a prime.

It is not a weakly prime, because it can be changed into another prime (126176427211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63088213608 + 63088213609.

It is an arithmetic number, because the mean of its divisors is an integer number (63088213609).

Almost surely, 2^126176427217 is an apocalyptic number.

It is an amenable number.

126176427217 is a deficient number, since it is larger than the sum of its proper divisors (1).

126176427217 is an equidigital number, since it uses as much as digits as its factorization.

126176427217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 46.

The spelling of 126176427217 in words is "one hundred twenty-six billion, one hundred seventy-six million, four hundred twenty-seven thousand, two hundred seventeen".