426661616210220 has 480 divisors, whose sum is σ = 1413466075929600. Its totient is φ = 107438985916416.

The previous prime is 426661616210213. The next prime is 426661616210317. The reversal of 426661616210220 is 22012616166624.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 32802454957 + ... + 32802467963.

It is an arithmetic number, because the mean of its divisors is an integer number (2944720991520).

Almost surely, 2^{426661616210220} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426661616210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706733037964800).

426661616210220 is an abundant number, since it is smaller than the sum of its proper divisors (986804459719380).

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

426661616210220 is a wasteful number, since it uses less digits than its factorization.

426661616210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16419 (or 16408 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 426661616210220 in words is "four hundred twenty-six trillion, six hundred sixty-one billion, six hundred sixteen million, two hundred ten thousand, two hundred twenty".