563687949786366 has 64 divisors (see below), whose sum is σ = 1188242358621696. Its totient is φ = 177916765488000.

The previous prime is 563687949786323. The next prime is 563687949786413. The reversal of 563687949786366 is 663687949786365.

It is a self number, because there is not a number n which added to its sum of digits gives 563687949786366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78327636 + ... + 85220856.

It is an arithmetic number, because the mean of its divisors is an integer number (18566286853464).

Almost surely, 2^{563687949786366} is an apocalyptic number.

563687949786366 is an abundant number, since it is smaller than the sum of its proper divisors (624554408835330).

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

563687949786366 is a wasteful number, since it uses less digits than its factorization.

563687949786366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6899217.

The product of its digits is 355541114880, while the sum is 93.

Subtracting 563687949786366 from its reverse (663687949786365), we obtain a palindrome (99999999999999).

The spelling of 563687949786366 in words is "five hundred sixty-three trillion, six hundred eighty-seven billion, nine hundred forty-nine million, seven hundred eighty-six thousand, three hundred sixty-six".