663361656522 has 8 divisors (see below), whose sum is σ = 1326723313056. Its totient is φ = 221120552172.

The previous prime is 663361656449. The next prime is 663361656523. The reversal of 663361656522 is 225656163366.

It is a sphenic number, since it is the product of 3 distinct primes.

663361656522 is an admirable number.

It is a super-2 number, since 2×663361656522² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (663361656523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 55280138038 + ... + 55280138049.

It is an arithmetic number, because the mean of its divisors is an integer number (165840414132).

Almost surely, 2^663361656522 is an apocalyptic number.

663361656522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

663361656522 is a wasteful number, since it uses less digits than its factorization.

663361656522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110560276092.

The product of its digits is 6998400, while the sum is 51.

The spelling of 663361656522 in words is "six hundred sixty-three billion, three hundred sixty-one million, six hundred fifty-six thousand, five hundred twenty-two".