201224461536 has 432 divisors, whose sum is σ = 711587848608. Its totient is φ = 53648179200.

The previous prime is 201224461517. The next prime is 201224461567. The reversal of 201224461536 is 635164422102.

201224461536 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 2 + 4 + 4 + 615 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 201224461536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 13300056 + ... + 13315176.

It is an arithmetic number, because the mean of its divisors is an integer number (1647194094).

Almost surely, 2^201224461536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201224461536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355793924304).

201224461536 is an abundant number, since it is smaller than the sum of its proper divisors (510363387072).

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

201224461536 is a wasteful number, since it uses less digits than its factorization.

201224461536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15215 (or 15197 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 201224461536 its reverse (635164422102), we get a palindrome (836388883638).

The spelling of 201224461536 in words is "two hundred one billion, two hundred twenty-four million, four hundred sixty-one thousand, five hundred thirty-six".