63989113660 has 12 divisors (see below), whose sum is σ = 134377138728. Its totient is φ = 25595645456.

The previous prime is 63989113589. The next prime is 63989113739. The reversal of 63989113660 is 6631198936.

63989113660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 63989113598 and 63989113607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1599727822 + ... + 1599727861.

It is an arithmetic number, because the mean of its divisors is an integer number (11198094894).

Almost surely, 2^63989113660 is an apocalyptic number.

It is an amenable number.

63989113660 is an abundant number, since it is smaller than the sum of its proper divisors (70388025068).

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

63989113660 is a wasteful number, since it uses less digits than its factorization.

63989113660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199455692 (or 3199455690 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 63989113660 in words is "sixty-three billion, nine hundred eighty-nine million, one hundred thirteen thousand, six hundred sixty".