426666564634050 has 288 divisors, whose sum is σ = 1235401344253440. Its totient is φ = 104947999833600.

The previous prime is 426666564634033. The next prime is 426666564634061. The reversal of 426666564634050 is 50436465666624.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 71986932187 + ... + 71986938113.

It is an arithmetic number, because the mean of its divisors is an integer number (4289588000880).

Almost surely, 2^{426666564634050} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426666564634050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617700672126720).

426666564634050 is an abundant number, since it is smaller than the sum of its proper divisors (808734779619390).

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

426666564634050 is a wasteful number, since it uses less digits than its factorization.

426666564634050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12978 (or 12970 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 63.

The spelling of 426666564634050 in words is "four hundred twenty-six trillion, six hundred sixty-six billion, five hundred sixty-four million, six hundred thirty-four thousand, fifty".