1646041006720 has 64 divisors (see below), whose sum is σ = 4292800143840. Its totient is φ = 598560363520.

The previous prime is 1646041006717. The next prime is 1646041006751. The reversal of 1646041006720 is 276001406461.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1646041006720.

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, 116899282 + ... + 116913361.

Almost surely, 2^{1646041006720} is an apocalyptic number.

1646041006720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1646041006720 is an abundant number, since it is smaller than the sum of its proper divisors (2646759137120).

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

1646041006720 is a wasteful number, since it uses less digits than its factorization.

1646041006720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233812673 (or 233812661 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 1646041006720 in words is "one trillion, six hundred forty-six billion, forty-one million, six thousand, seven hundred twenty".