663805468802 has 64 divisors (see below), whose sum is σ = 1177604386560. Its totient is φ = 274700160000.

The previous prime is 663805468787. The next prime is 663805468813. The reversal of 663805468802 is 208864508366.

It is a super-2 number, since 2×663805468802² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36525974 + ... + 36544142.

It is an arithmetic number, because the mean of its divisors is an integer number (18400068540).

Almost surely, 2^663805468802 is an apocalyptic number.

663805468802 is a deficient number, since it is larger than the sum of its proper divisors (513798917758).

663805468802 is a wasteful number, since it uses less digits than its factorization.

663805468802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18747.

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 663805468802 in words is "six hundred sixty-three billion, eight hundred five million, four hundred sixty-eight thousand, eight hundred two".