201534523542 has 192 divisors, whose sum is σ = 492219307008. Its totient is φ = 59072832000.

The previous prime is 201534523537. The next prime is 201534523543. The reversal of 201534523542 is 245325435102.

201534523542 is a `hidden beast` number, since 2 + 0 + 1 + 53 + 45 + 23 + 542 = 666.

201534523542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 201534523497 and 201534523506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201534523543) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 386822242 + ... + 386822762.

It is an arithmetic number, because the mean of its divisors is an integer number (2563642224).

Almost surely, 2^201534523542 is an apocalyptic number.

201534523542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 201534523542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246109653504).

201534523542 is an abundant number, since it is smaller than the sum of its proper divisors (290684783466).

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

201534523542 is a wasteful number, since it uses less digits than its factorization.

201534523542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 201534523542 its reverse (245325435102), we get a palindrome (446859958644).

The spelling of 201534523542 in words is "two hundred one billion, five hundred thirty-four million, five hundred twenty-three thousand, five hundred forty-two".