1606220166444 has 48 divisors (see below), whose sum is σ = 3792444015360. Its totient is φ = 529058283840.

The previous prime is 1606220166427. The next prime is 1606220166503. The reversal of 1606220166444 is 4446610226061.

It is a junction number, because it is equal to n+sod(n) for n = 1606220166396 and 1606220166405.

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, 839674 + ... + 1979265.

It is an arithmetic number, because the mean of its divisors is an integer number (79009250320).

Almost surely, 2^{1606220166444} is an apocalyptic number.

It is an amenable number.

1606220166444 is an abundant number, since it is smaller than the sum of its proper divisors (2186223848916).

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

1606220166444 is a wasteful number, since it uses less digits than its factorization.

1606220166444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819510 (or 2819508 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 1606220166444 in words is "one trillion, six hundred six billion, two hundred twenty million, one hundred sixty-six thousand, four hundred forty-four".