663513315366 has 64 divisors (see below), whose sum is σ = 1462650193152. Its totient is φ = 198985200000.

The previous prime is 663513315349. The next prime is 663513315383.

663513315366 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (663513315349) and next prime (663513315383).

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, 15784096 + ... + 15826076.

It is an arithmetic number, because the mean of its divisors is an integer number (22853909268).

Almost surely, 2^663513315366 is an apocalyptic number.

663513315366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 663513315366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (731325096576).

663513315366 is an abundant number, since it is smaller than the sum of its proper divisors (799136877786).

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

663513315366 is a wasteful number, since it uses less digits than its factorization.

663513315366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44469.

The product of its digits is 2624400, while the sum is 48.

It can be divided in two parts, 663513 and 315366, that added together give a palindrome (978879).

The spelling of 663513315366 in words is "six hundred sixty-three billion, five hundred thirteen million, three hundred fifteen thousand, three hundred sixty-six".