663363204345 has 24 divisors (see below), whose sum is σ = 1158222481416. Its totient is φ = 351211269888.

The previous prime is 663363204341. The next prime is 663363204349. The reversal of 663363204345 is 543402363366.

663363204345 is a `hidden beast` number, since 6 + 6 + 3 + 3 + 632 + 0 + 4 + 3 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (663363204341) and next prime (663363204349).

It can be written as a sum of positive squares in 4 ways, for example, as 27152777961 + 636210426384 = 164781^2 + 797628^2 .

It is not a de Polignac number, because 663363204345 - 2² = 663363204341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 663363204345.

It is not an unprimeable number, because it can be changed into a prime (663363204341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53794582 + ... + 53806911.

It is an arithmetic number, because the mean of its divisors is an integer number (48259270059).

Almost surely, 2^663363204345 is an apocalyptic number.

It is an amenable number.

663363204345 is a deficient number, since it is larger than the sum of its proper divisors (494859277071).

663363204345 is a wasteful number, since it uses less digits than its factorization.

663363204345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107601641 (or 107601638 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 45.

The spelling of 663363204345 in words is "six hundred sixty-three billion, three hundred sixty-three million, two hundred four thousand, three hundred forty-five".