663828404828366 has 32 divisors (see below), whose sum is σ = 1032384780288000. Its totient is φ = 319752038545632.

The previous prime is 663828404828317. The next prime is 663828404828377.

663828404828366 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×663828404828366² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (74) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 663828404828293 and 663828404828302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51941555 + ... + 63447473.

It is an arithmetic number, because the mean of its divisors is an integer number (32262024384000).

Almost surely, 2^{663828404828366} is an apocalyptic number.

663828404828366 is a deficient number, since it is larger than the sum of its proper divisors (368556375459634).

663828404828366 is a wasteful number, since it uses less digits than its factorization.

663828404828366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11508176.

The product of its (nonzero) digits is 3057647616, while the sum is 74.

The spelling of 663828404828366 in words is "six hundred sixty-three trillion, eight hundred twenty-eight billion, four hundred four million, eight hundred twenty-eight thousand, three hundred sixty-six".