2006444562645 has 16 divisors (see below), whose sum is σ = 3349890052992. Its totient is φ = 1023577515840.

The previous prime is 2006444562641. The next prime is 2006444562719. The reversal of 2006444562645 is 5462654446002.

It is a happy number.

It is not a de Polignac number, because 2006444562645 - 2² = 2006444562641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2006444562594 and 2006444562603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006444562641) 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, 2907890326 + ... + 2907891015.

It is an arithmetic number, because the mean of its divisors is an integer number (209368128312).

Almost surely, 2^{2006444562645} is an apocalyptic number.

It is an amenable number.

2006444562645 is a deficient number, since it is larger than the sum of its proper divisors (1343445490347).

2006444562645 is a wasteful number, since it uses less digits than its factorization.

2006444562645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815781372.

The product of its (nonzero) digits is 5529600, while the sum is 48.

The spelling of 2006444562645 in words is "two trillion, six billion, four hundred forty-four million, five hundred sixty-two thousand, six hundred forty-five".