63720543510 has 128 divisors (see below), whose sum is σ = 184016448000. Its totient is φ = 15597277056.

The previous prime is 63720543463. The next prime is 63720543517. The reversal of 63720543510 is 1534502736.

63720543510 is a `hidden beast` number, since 6 + 3 + 7 + 205 + 435 + 10 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63720543517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 577581 + ... + 678999.

It is an arithmetic number, because the mean of its divisors is an integer number (1437628500).

Almost surely, 2^63720543510 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63720543510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92008224000).

63720543510 is an abundant number, since it is smaller than the sum of its proper divisors (120295904490).

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

63720543510 is a wasteful number, since it uses less digits than its factorization.

63720543510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101627 (or 101621 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 63720543510 in words is "sixty-three billion, seven hundred twenty million, five hundred forty-three thousand, five hundred ten".