663305377056 has 96 divisors (see below), whose sum is σ = 2004441344640. Its totient is φ = 188132468736.

The previous prime is 663305377043. The next prime is 663305377109. The reversal of 663305377056 is 650773503366.

It is a tau number, because it is divible by the number of its divisors (96).

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, 3510351 + ... + 3694478.

It is an arithmetic number, because the mean of its divisors is an integer number (20879597340).

Almost surely, 2^663305377056 is an apocalyptic number.

It is an amenable number.

663305377056 is an abundant number, since it is smaller than the sum of its proper divisors (1341135967584).

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

663305377056 is a wasteful number, since it uses less digits than its factorization.

663305377056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204986 (or 7204978 counting only the distinct ones).

The product of its (nonzero) digits is 7144200, while the sum is 51.

The spelling of 663305377056 in words is "six hundred sixty-three billion, three hundred five million, three hundred seventy-seven thousand, fifty-six".