663081708036 has 144 divisors (see below), whose sum is σ = 1769121950400. Its totient is φ = 192919077120.

The previous prime is 663081707993. The next prime is 663081708193. The reversal of 663081708036 is 630807180366.

663081708036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7493346 + ... + 7581318.

It is an arithmetic number, because the mean of its divisors is an integer number (12285569100).

Almost surely, 2^663081708036 is an apocalyptic number.

663081708036 is a gapful number since it is divisible by the number (66) 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 663081708036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884560975200).

663081708036 is an abundant number, since it is smaller than the sum of its proper divisors (1106040242364).

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

663081708036 is a wasteful number, since it uses less digits than its factorization.

663081708036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88210 (or 88197 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 663081708036 in words is "six hundred sixty-three billion, eighty-one million, seven hundred eight thousand, thirty-six".