63664460000 has 120 divisors (see below), whose sum is σ = 163435046544. Its totient is φ = 24358400000.

The previous prime is 63664459949. The next prime is 63664460081. The reversal of 63664460000 is 6446636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 390800 + ... + 529200.

Almost surely, 2^63664460000 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 63664460000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81717523272).

63664460000 is an abundant number, since it is smaller than the sum of its proper divisors (99770586544).

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

63664460000 is a wasteful number, since it uses less digits than its factorization.

63664460000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138454 (or 138431 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 63664460000 in words is "sixty-three billion, six hundred sixty-four million, four hundred sixty thousand".