16843378420 has 24 divisors (see below), whose sum is σ = 38586649248. Its totient is φ = 6124864800.

The previous prime is 16843378411. The next prime is 16843378421. The reversal of 16843378420 is 2487334861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16843378421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38280186 + ... + 38280625.

It is an arithmetic number, because the mean of its divisors is an integer number (1607777052).

Almost surely, 2^16843378420 is an apocalyptic number.

16843378420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16843378420 is an abundant number, since it is smaller than the sum of its proper divisors (21743270828).

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

16843378420 is a wasteful number, since it uses less digits than its factorization.

16843378420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76560831 (or 76560829 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 16843378420 in words is "sixteen billion, eight hundred forty-three million, three hundred seventy-eight thousand, four hundred twenty".