663415220313420 has 96 divisors (see below), whose sum is σ = 1858526279850240. Its totient is φ = 176818956276480.

The previous prime is 663415220313401. The next prime is 663415220313431. The reversal of 663415220313420 is 24313022514366.

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, 2826739399 + ... + 2826974081.

It is an arithmetic number, because the mean of its divisors is an integer number (19359648748440).

Almost surely, 2^{663415220313420} is an apocalyptic number.

663415220313420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663415220313420 is an abundant number, since it is smaller than the sum of its proper divisors (1195111059536820).

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

663415220313420 is a wasteful number, since it uses less digits than its factorization.

663415220313420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258935 (or 258933 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

Adding to 663415220313420 its reverse (24313022514366), we get a palindrome (687728242827786).

The spelling of 663415220313420 in words is "six hundred sixty-three trillion, four hundred fifteen billion, two hundred twenty million, three hundred thirteen thousand, four hundred twenty".