16427980920 has 256 divisors, whose sum is σ = 55654179840. Its totient is φ = 3849043968.

The previous prime is 16427980879. The next prime is 16427980927. The reversal of 16427980920 is 2908972461.

It is a self number, because there is not a number n which added to its sum of digits gives 16427980920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16427980927) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8143752 + ... + 8145768.

It is an arithmetic number, because the mean of its divisors is an integer number (217399140).

Almost surely, 2^16427980920 is an apocalyptic number.

16427980920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16427980920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27827089920).

16427980920 is an abundant number, since it is smaller than the sum of its proper divisors (39226198920).

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

16427980920 is a wasteful number, since it uses less digits than its factorization.

16427980920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 16427980920 in words is "sixteen billion, four hundred twenty-seven million, nine hundred eighty thousand, nine hundred twenty".