426640677745 has 8 divisors (see below), whose sum is σ = 512160076584. Its totient is φ = 341185033344.

The previous prime is 426640677721. The next prime is 426640677767. The reversal of 426640677745 is 547776046624.

It can be written as a sum of positive squares in 4 ways, for example, as 7809080161 + 418831597584 = 88369^2 + 647172^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 426640677745 - 2²³ = 426632289137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426640677745.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15923884 + ... + 15950653.

It is an arithmetic number, because the mean of its divisors is an integer number (64020009573).

Almost surely, 2^426640677745 is an apocalyptic number.

It is an amenable number.

426640677745 is a deficient number, since it is larger than the sum of its proper divisors (85519398839).

426640677745 is a wasteful number, since it uses less digits than its factorization.

426640677745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31877219.

The product of its (nonzero) digits is 47416320, while the sum is 58.

The spelling of 426640677745 in words is "four hundred twenty-six billion, six hundred forty million, six hundred seventy-seven thousand, seven hundred forty-five".