201233213402440 has 64 divisors (see below), whose sum is σ = 454265240338800. Its totient is φ = 80228618477568.

The previous prime is 201233213402381. The next prime is 201233213402443. The reversal of 201233213402440 is 44204312332102.

It can be written as a sum of positive squares in 8 ways, for example, as 190813500552676 + 10419712849764 = 13813526^2 + 3227958^2 .

It is not an unprimeable number, because it can be changed into a prime (201233213402443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15711196 + ... + 25481524.

Almost surely, 2^{201233213402440} is an apocalyptic number.

201233213402440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201233213402440 is an abundant number, since it is smaller than the sum of its proper divisors (253032026936360).

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

201233213402440 is a wasteful number, since it uses less digits than its factorization.

201233213402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9772034 (or 9772030 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 201233213402440 its reverse (44204312332102), we get a palindrome (245437525734542).

The spelling of 201233213402440 in words is "two hundred one trillion, two hundred thirty-three billion, two hundred thirteen million, four hundred two thousand, four hundred forty".