201064468240 has 20 divisors (see below), whose sum is σ = 467474888844. Its totient is φ = 80425787264.

The previous prime is 201064468207. The next prime is 201064468247. The reversal of 201064468240 is 42864460102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54197702416 + 146866765824 = 232804^2 + 383232^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 201064468240.

It is not an unprimeable number, because it can be changed into a prime (201064468247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256652847 + ... + 1256653006.

Almost surely, 2^201064468240 is an apocalyptic number.

201064468240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201064468240 is an abundant number, since it is smaller than the sum of its proper divisors (266410420604).

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

201064468240 is a wasteful number, since it uses less digits than its factorization.

201064468240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513305866 (or 2513305860 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 201064468240 in words is "two hundred one billion, sixty-four million, four hundred sixty-eight thousand, two hundred forty".