201043402326 has 128 divisors (see below), whose sum is σ = 496419840000. Its totient is φ = 59923214208.

The previous prime is 201043402181. The next prime is 201043402327. The reversal of 201043402326 is 623204340102.

201043402326 is a `hidden beast` number, since 201 + 0 + 434 + 0 + 2 + 3 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201043402326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201043402327) 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, 2905075 + ... + 2973473.

It is an arithmetic number, because the mean of its divisors is an integer number (3878280000).

Almost surely, 2^201043402326 is an apocalyptic number.

201043402326 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 201043402326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248209920000).

201043402326 is an abundant number, since it is smaller than the sum of its proper divisors (295376437674).

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

201043402326 is a wasteful number, since it uses less digits than its factorization.

201043402326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68555 (or 68549 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 201043402326 its reverse (623204340102), we get a palindrome (824247742428).

The spelling of 201043402326 in words is "two hundred one billion, forty-three million, four hundred two thousand, three hundred twenty-six".