201530450156 has 48 divisors (see below), whose sum is σ = 404767614720. Its totient is φ = 86004901440.

The previous prime is 201530450129. The next prime is 201530450197. The reversal of 201530450156 is 651054035102.

201530450156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201530450156² (a number of 23 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 12440510 + ... + 12456698.

It is an arithmetic number, because the mean of its divisors is an integer number (8432658640).

Almost surely, 2^201530450156 is an apocalyptic number.

It is an amenable number.

201530450156 is an abundant number, since it is smaller than the sum of its proper divisors (203237164564).

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

201530450156 is a wasteful number, since it uses less digits than its factorization.

201530450156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18054 (or 18052 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 201530450156 its reverse (651054035102), we get a palindrome (852584485258).

The spelling of 201530450156 in words is "two hundred one billion, five hundred thirty million, four hundred fifty thousand, one hundred fifty-six".