663216711057 has 16 divisors (see below), whose sum is σ = 992672591680. Its totient is φ = 437586281856.

The previous prime is 663216711037. The next prime is 663216711061. The reversal of 663216711057 is 750117612366.

663216711057 is a `hidden beast` number, since 6 + 632 + 1 + 6 + 7 + 1 + 1 + 0 + 5 + 7 = 666.

It is not a de Polignac number, because 663216711057 - 2⁸ = 663216710801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663216711037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126613783 + ... + 126619020.

It is an arithmetic number, because the mean of its divisors is an integer number (62042036980).

Almost surely, 2^663216711057 is an apocalyptic number.

It is an amenable number.

663216711057 is a deficient number, since it is larger than the sum of its proper divisors (329455880623).

663216711057 is a wasteful number, since it uses less digits than its factorization.

663216711057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253232909 (or 253232903 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 663216711057 in words is "six hundred sixty-three billion, two hundred sixteen million, seven hundred eleven thousand, fifty-seven".