426540656709 has 24 divisors (see below), whose sum is σ = 632811059712. Its totient is φ = 276655327200.

The previous prime is 426540656681. The next prime is 426540656743. The reversal of 426540656709 is 907656045624.

426540656709 is a `hidden beast` number, since 4 + 26 + 54 + 0 + 6 + 567 + 0 + 9 = 666.

It is not a de Polignac number, because 426540656709 - 2⁸ = 426540656453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426540656309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5740972 + ... + 5814794.

It is an arithmetic number, because the mean of its divisors is an integer number (26367127488).

Almost surely, 2^426540656709 is an apocalyptic number.

It is an amenable number.

426540656709 is a deficient number, since it is larger than the sum of its proper divisors (206270403003).

426540656709 is a wasteful number, since it uses less digits than its factorization.

426540656709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91217 (or 91214 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 426540656709 in words is "four hundred twenty-six billion, five hundred forty million, six hundred fifty-six thousand, seven hundred nine".