16842821551420 has 48 divisors (see below), whose sum is σ = 37600129072800. Its totient is φ = 6319349395200.

The previous prime is 16842821551273. The next prime is 16842821551447. The reversal of 16842821551420 is 2415512824861.

It is a super-3 number, since 3×16842821551420³ (a number of 41 digits) contains 333 as substring.

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, 219383475 + ... + 219460234.

It is an arithmetic number, because the mean of its divisors is an integer number (783336022350).

Almost surely, 2^{16842821551420} is an apocalyptic number.

16842821551420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16842821551420 is an abundant number, since it is smaller than the sum of its proper divisors (20757307521380).

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

16842821551420 is a wasteful number, since it uses less digits than its factorization.

16842821551420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438843838 (or 438843836 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 16842821551420 in words is "sixteen trillion, eight hundred forty-two billion, eight hundred twenty-one million, five hundred fifty-one thousand, four hundred twenty".