2006563781164 has 24 divisors (see below), whose sum is σ = 3524568223680. Its totient is φ = 999550924944.

The previous prime is 2006563781147. The next prime is 2006563781171. The reversal of 2006563781164 is 4611873656002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381307 + ... + 2039245.

It is an arithmetic number, because the mean of its divisors is an integer number (146857009320).

Almost surely, 2^{2006563781164} is an apocalyptic number.

It is an amenable number.

2006563781164 is a deficient number, since it is larger than the sum of its proper divisors (1518004442516).

2006563781164 is a wasteful number, since it uses less digits than its factorization.

2006563781164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659069 (or 1659067 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 2006563781164 in words is "two trillion, six billion, five hundred sixty-three million, seven hundred eighty-one thousand, one hundred sixty-four".