63840903488 has 336 divisors, whose sum is σ = 152509630464. Its totient is φ = 26349649920.

The previous prime is 63840903463. The next prime is 63840903509. The reversal of 63840903488 is 88430904836.

63840903488 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 2×63840903488² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 334245473 + ... + 334245663.

Almost surely, 2^63840903488 is an apocalyptic number.

63840903488 is a gapful number since it is divisible by the number (68) 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 63840903488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76254815232).

63840903488 is an abundant number, since it is smaller than the sum of its proper divisors (88668726976).

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

63840903488 is a wasteful number, since it uses less digits than its factorization.

63840903488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 63840903488 in words is "sixty-three billion, eight hundred forty million, nine hundred three thousand, four hundred eighty-eight".