63535840732 has 192 divisors, whose sum is σ = 149228642304. Its totient is φ = 22955581440.

The previous prime is 63535840729. The next prime is 63535840733. The reversal of 63535840732 is 23704853536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63535840733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56576323 + ... + 56577445.

It is an arithmetic number, because the mean of its divisors is an integer number (777232512).

Almost surely, 2^63535840732 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 63535840732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74614321152).

63535840732 is an abundant number, since it is smaller than the sum of its proper divisors (85692801572).

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

63535840732 is a wasteful number, since it uses less digits than its factorization.

63535840732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1426 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 63535840732 in words is "sixty-three billion, five hundred thirty-five million, eight hundred forty thousand, seven hundred thirty-two".