63631841240 has 256 divisors, whose sum is σ = 164472422400. Its totient is φ = 21946982400.

The previous prime is 63631841237. The next prime is 63631841257. The reversal of 63631841240 is 4214813636.

It is a happy number.

63631841240 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 2×63631841240² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63631841194 and 63631841203.

It is a congruent number.

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, 188818352 + ... + 188818688.

It is an arithmetic number, because the mean of its divisors is an integer number (642470400).

Almost surely, 2^63631841240 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 63631841240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82236211200).

63631841240 is an abundant number, since it is smaller than the sum of its proper divisors (100840581160).

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

63631841240 is a wasteful number, since it uses less digits than its factorization.

63631841240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 63631841240 in words is "sixty-three billion, six hundred thirty-one million, eight hundred forty-one thousand, two hundred forty".