1646417420056 has 32 divisors (see below), whose sum is σ = 3253466300400. Its totient is φ = 778931959680.

The previous prime is 1646417420017. The next prime is 1646417420069. The reversal of 1646417420056 is 6500247146461.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1646417419988 and 1646417420015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6471855 + ... + 6721438.

Almost surely, 2^{1646417420056} is an apocalyptic number.

It is an amenable number.

1646417420056 is a deficient number, since it is larger than the sum of its proper divisors (1607048880344).

1646417420056 is a wasteful number, since it uses less digits than its factorization.

1646417420056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13194139 (or 13194135 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 1646417420056 in words is "one trillion, six hundred forty-six billion, four hundred seventeen million, four hundred twenty thousand, fifty-six".