423642265606626 has 128 divisors (see below), whose sum is σ = 1001508588748800. Its totient is φ = 118007117276160.

The previous prime is 423642265606559. The next prime is 423642265606627. The reversal of 423642265606626 is 626606562246324.

It is a self number, because there is not a number n which added to its sum of digits gives 423642265606626.

It is not an unprimeable number, because it can be changed into a prime (423642265606627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 740724460 + ... + 741296168.

It is an arithmetic number, because the mean of its divisors is an integer number (7824285849600).

Almost surely, 2^{423642265606626} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423642265606626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500754294374400).

423642265606626 is an abundant number, since it is smaller than the sum of its proper divisors (577866323142174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423642265606626 is a wasteful number, since it uses less digits than its factorization.

423642265606626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587144.

The product of its (nonzero) digits is 179159040, while the sum is 60.

The spelling of 423642265606626 in words is "four hundred twenty-three trillion, six hundred forty-two billion, two hundred sixty-five million, six hundred six thousand, six hundred twenty-six".