201134351646 has 48 divisors (see below), whose sum is σ = 448345772784. Its totient is φ = 65119583232.

The previous prime is 201134351617. The next prime is 201134351669. The reversal of 201134351646 is 646153431102.

201134351646 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 3 + 4 + 3 + 5 + 1 + 646 = 666.

201134351646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 201134351646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122581 + ... + 645983.

It is an arithmetic number, because the mean of its divisors is an integer number (9340536933).

Almost surely, 2^201134351646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201134351646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224172886392).

201134351646 is an abundant number, since it is smaller than the sum of its proper divisors (247211421138).

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

201134351646 is a wasteful number, since it uses less digits than its factorization.

201134351646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524025 (or 524022 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 201134351646 its reverse (646153431102), we get a palindrome (847287782748).

The spelling of 201134351646 in words is "two hundred one billion, one hundred thirty-four million, three hundred fifty-one thousand, six hundred forty-six".