201426643000 has 192 divisors, whose sum is σ = 519637809600. Its totient is φ = 73026272000.

The previous prime is 201426642953. The next prime is 201426643007. The reversal of 201426643000 is 346624102.

It is a self number, because there is not a number n which added to its sum of digits gives 201426643000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201426643007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43436682 + ... + 43441318.

It is an arithmetic number, because the mean of its divisors is an integer number (2706446925).

Almost surely, 2^201426643000 is an apocalyptic number.

201426643000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201426643000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259818904800).

201426643000 is an abundant number, since it is smaller than the sum of its proper divisors (318211166600).

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

201426643000 is a wasteful number, since it uses less digits than its factorization.

201426643000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039 (or 5014 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 201426643000 in words is "two hundred one billion, four hundred twenty-six million, six hundred forty-three thousand".