426851158609 has 2 divisors, whose sum is σ = 426851158610. Its totient is φ = 426851158608.

The previous prime is 426851158583. The next prime is 426851158661. The reversal of 426851158609 is 906851158624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373684022209 + 53167136400 = 611297^2 + 230580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426851158609 is a prime.

It is a super-3 number, since 3×426851158609³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 426851158609.

It is not a weakly prime, because it can be changed into another prime (426851128609) 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 as a sum of consecutive naturals, namely, 213425579304 + 213425579305.

It is an arithmetic number, because the mean of its divisors is an integer number (213425579305).

Almost surely, 2^426851158609 is an apocalyptic number.

It is an amenable number.

426851158609 is a deficient number, since it is larger than the sum of its proper divisors (1).

426851158609 is an equidigital number, since it uses as much as digits as its factorization.

426851158609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 426851158609 in words is "four hundred twenty-six billion, eight hundred fifty-one million, one hundred fifty-eight thousand, six hundred nine".