663453354366 has 32 divisors (see below), whose sum is σ = 1608371769600. Its totient is φ = 201046470840.

The previous prime is 663453354353. The next prime is 663453354451.

It is a happy number.

663453354366 is a `hidden beast` number, since 6 + 6 + 3 + 4 + 5 + 33 + 543 + 66 = 666.

663453354366 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558461826 + ... + 558463013.

It is an arithmetic number, because the mean of its divisors is an integer number (50261617800).

Almost surely, 2^663453354366 is an apocalyptic number.

663453354366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

663453354366 is an abundant number, since it is smaller than the sum of its proper divisors (944918415234).

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

663453354366 is a wasteful number, since it uses less digits than its factorization.

663453354366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116924861 (or 1116924855 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 54.

The spelling of 663453354366 in words is "six hundred sixty-three billion, four hundred fifty-three million, three hundred fifty-four thousand, three hundred sixty-six".