426078646009 has 3 divisors (see below), whose sum is σ = 426079298757. Its totient is φ = 426077993262.

The previous prime is 426078645961. The next prime is 426078646079. The reversal of 426078646009 is 900646870624.

It is a happy number.

The square root of 426078646009 is 652747.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 426078646009 - 2³³ = 417488711417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426078646079) 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 in 2 ways as a sum of consecutive naturals, for example, 326374 + ... + 979120.

It is an arithmetic number, because the mean of its divisors is an integer number (142026432919).

Almost surely, 2^426078646009 is an apocalyptic number.

426078646009 is the 652747-th square number.

426078646009 is the 326374-th centered octagonal number.

It is an amenable number.

426078646009 is a deficient number, since it is larger than the sum of its proper divisors (652748).

426078646009 is an frugal number, since it uses more digits than its factorization.

426078646009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305494 (or 652747 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 426078646009 in words is "four hundred twenty-six billion, seventy-eight million, six hundred forty-six thousand, nine".