426128400617 has 2 divisors, whose sum is σ = 426128400618. Its totient is φ = 426128400616.

The previous prime is 426128400611. The next prime is 426128400629. The reversal of 426128400617 is 716004821624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218024558761 + 208103841856 = 466931^2 + 456184^2 .

It is a cyclic number.

It is not a de Polignac number, because 426128400617 - 2⁴ = 426128400601 is a prime.

It is not a weakly prime, because it can be changed into another prime (426128400611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213064200308 + 213064200309.

It is an arithmetic number, because the mean of its divisors is an integer number (213064200309).

Almost surely, 2^426128400617 is an apocalyptic number.

It is an amenable number.

426128400617 is a deficient number, since it is larger than the sum of its proper divisors (1).

426128400617 is an equidigital number, since it uses as much as digits as its factorization.

426128400617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 426128400617 in words is "four hundred twenty-six billion, one hundred twenty-eight million, four hundred thousand, six hundred seventeen".