63304765440 has 832 divisors, whose sum is σ = 249614499840. Its totient is φ = 13377208320.

The previous prime is 63304765423. The next prime is 63304765477. The reversal of 63304765440 is 4456740336.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 63304765392 and 63304765401.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 498462657 + ... + 498462783.

Almost surely, 2^63304765440 is an apocalyptic number.

63304765440 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 63304765440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124807249920).

63304765440 is an abundant number, since it is smaller than the sum of its proper divisors (186309734400).

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

63304765440 is a wasteful number, since it uses less digits than its factorization.

63304765440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 42.

The spelling of 63304765440 in words is "sixty-three billion, three hundred four million, seven hundred sixty-five thousand, four hundred forty".