63650429640 has 768 divisors, whose sum is σ = 263723040000. Its totient is φ = 13567647744.

The previous prime is 63650429617. The next prime is 63650429669. The reversal of 63650429640 is 4692405636.

63650429640 is a `hidden beast` number, since 63 + 6 + 504 + 29 + 64 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 125049706 + ... + 125050214.

It is an arithmetic number, because the mean of its divisors is an integer number (343389375).

Almost surely, 2^63650429640 is an apocalyptic number.

63650429640 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 63650429640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131861520000).

63650429640 is an abundant number, since it is smaller than the sum of its proper divisors (200072610360).

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

63650429640 is a wasteful number, since it uses less digits than its factorization.

63650429640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 63650429640 in words is "sixty-three billion, six hundred fifty million, four hundred twenty-nine thousand, six hundred forty".