663841631105 has 8 divisors (see below), whose sum is σ = 796614345000. Its totient is φ = 531070379776.

The previous prime is 663841631027. The next prime is 663841631111. The reversal of 663841631105 is 501136148366.

It can be written as a sum of positive squares in 4 ways, for example, as 100511825296 + 563329805809 = 317036^2 + 750553^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 663841631105 - 2¹⁴ = 663841614721 is a prime.

It is a super-2 number, since 2×663841631105² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478231 + ... + 1874259.

It is an arithmetic number, because the mean of its divisors is an integer number (99576793125).

Almost surely, 2^663841631105 is an apocalyptic number.

It is an amenable number.

663841631105 is a deficient number, since it is larger than the sum of its proper divisors (132772713895).

663841631105 is a wasteful number, since it uses less digits than its factorization.

663841631105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731283.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 663841631105 in words is "six hundred sixty-three billion, eight hundred forty-one million, six hundred thirty-one thousand, one hundred five".