63115398720 has 448 divisors, whose sum is σ = 244583712000. Its totient is φ = 15194603520.

The previous prime is 63115398707. The next prime is 63115398727. The reversal of 63115398720 is 2789351136.

63115398720 is a `hidden beast` number, since 6 + 3 + 11 + 539 + 87 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (63115398727) 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, 14158732 + ... + 14163188.

Almost surely, 2^63115398720 is an apocalyptic number.

63115398720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63115398720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122291856000).

63115398720 is an abundant number, since it is smaller than the sum of its proper divisors (181468313280).

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

63115398720 is a wasteful number, since it uses less digits than its factorization.

63115398720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643 (or 4627 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

It can be divided in two parts, 631 and 15398720, that added together give a palindrome (15399351).

The spelling of 63115398720 in words is "sixty-three billion, one hundred fifteen million, three hundred ninety-eight thousand, seven hundred twenty".