426666611316220 has 192 divisors, whose sum is σ = 1034549298800640. Its totient is φ = 146294729856000.

The previous prime is 426666611316181. The next prime is 426666611316221. The reversal of 426666611316220 is 22613116666624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426666611316221) 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, 115209889 + ... + 118855591.

It is an arithmetic number, because the mean of its divisors is an integer number (5388277597920).

Almost surely, 2^{426666611316220} 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 426666611316220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517274649400320).

426666611316220 is an abundant number, since it is smaller than the sum of its proper divisors (607882687484420).

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

426666611316220 is a wasteful number, since it uses less digits than its factorization.

426666611316220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646076 (or 3646074 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 426666611316220 in words is "four hundred twenty-six trillion, six hundred sixty-six billion, six hundred eleven million, three hundred sixteen thousand, two hundred twenty".