426551909969 has 2 divisors, whose sum is σ = 426551909970. Its totient is φ = 426551909968.

The previous prime is 426551909911. The next prime is 426551909989. The reversal of 426551909969 is 969909155624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246674135569 + 179877774400 = 496663^2 + 424120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426551909969 is a prime.

It is a super-2 number, since 2×426551909969² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (426551909989) 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, 213275954984 + 213275954985.

It is an arithmetic number, because the mean of its divisors is an integer number (213275954985).

Almost surely, 2^426551909969 is an apocalyptic number.

It is an amenable number.

426551909969 is a deficient number, since it is larger than the sum of its proper divisors (1).

426551909969 is an equidigital number, since it uses as much as digits as its factorization.

426551909969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47239200, while the sum is 65.

The spelling of 426551909969 in words is "four hundred twenty-six billion, five hundred fifty-one million, nine hundred nine thousand, nine hundred sixty-nine".