2006644460646 has 32 divisors (see below), whose sum is σ = 4744775082240. Its totient is φ = 553557092256.

The previous prime is 2006644460603. The next prime is 2006644460651. The reversal of 2006644460646 is 6460644466002.

It is a junction number, because it is equal to n+sod(n) for n = 2006644460595 and 2006644460604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823744456 + ... + 823746891.

It is an arithmetic number, because the mean of its divisors is an integer number (148274221320).

Almost surely, 2^{2006644460646} is an apocalyptic number.

2006644460646 is an abundant number, since it is smaller than the sum of its proper divisors (2738130621594).

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

2006644460646 is a wasteful number, since it uses less digits than its factorization.

2006644460646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647491388.

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 2006644460646 in words is "two trillion, six billion, six hundred forty-four million, four hundred sixty thousand, six hundred forty-six".