16820420459000 has 64 divisors (see below), whose sum is σ = 39741917941440. Its totient is φ = 6662846121600.

The previous prime is 16820420458991. The next prime is 16820420459093. The reversal of 16820420459000 is 95402402861.

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, 81549527 + ... + 81755526.

It is an arithmetic number, because the mean of its divisors is an integer number (620967467835).

Almost surely, 2^{16820420459000} is an apocalyptic number.

16820420459000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16820420459000 is an abundant number, since it is smaller than the sum of its proper divisors (22921497482440).

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

16820420459000 is a wasteful number, since it uses less digits than its factorization.

16820420459000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163305177 (or 163305163 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 16820420459000 in words is "sixteen trillion, eight hundred twenty billion, four hundred twenty million, four hundred fifty-nine thousand".