201540533355 has 144 divisors (see below), whose sum is σ = 418989182976. Its totient is φ = 87782175360.

The previous prime is 201540533339. The next prime is 201540533357. The reversal of 201540533355 is 553335045102.

201540533355 is a `hidden beast` number, since 20 + 1 + 54 + 0 + 533 + 3 + 55 = 666.

It is not a de Polignac number, because 201540533355 - 2⁴ = 201540533339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201540533357) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 45155854 + ... + 45160316.

It is an arithmetic number, because the mean of its divisors is an integer number (2909647104).

Almost surely, 2^201540533355 is an apocalyptic number.

201540533355 is an abundant number, since it is smaller than the sum of its proper divisors (217448649621).

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

201540533355 is a wasteful number, since it uses less digits than its factorization.

201540533355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4798 (or 4772 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

Adding to 201540533355 its reverse (553335045102), we get a palindrome (754875578457).

The spelling of 201540533355 in words is "two hundred one billion, five hundred forty million, five hundred thirty-three thousand, three hundred fifty-five".