63440553707000 has 128 divisors (see below), whose sum is σ = 148648496293440. Its totient is φ = 25342459084800.

The previous prime is 63440553706997. The next prime is 63440553707017. The reversal of 63440553707000 is 70735504436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4728364292 + ... + 4728377708.

Almost surely, 2^{63440553707000} 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 63440553707000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74324248146720).

63440553707000 is an abundant number, since it is smaller than the sum of its proper divisors (85207942586440).

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

63440553707000 is a wasteful number, since it uses less digits than its factorization.

63440553707000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19378 (or 19364 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 44.

The spelling of 63440553707000 in words is "sixty-three trillion, four hundred forty billion, five hundred fifty-three million, seven hundred seven thousand".