16655863914420 has 192 divisors, whose sum is σ = 48404207819520. Its totient is φ = 4274237140992.

The previous prime is 16655863914409. The next prime is 16655863914427. The reversal of 16655863914420 is 2441936855661.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16655863914427) 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, 768496704 + ... + 768518376.

It is an arithmetic number, because the mean of its divisors is an integer number (252105249060).

Almost surely, 2^{16655863914420} is an apocalyptic number.

16655863914420 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 16655863914420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24202103909760).

16655863914420 is an abundant number, since it is smaller than the sum of its proper divisors (31748343905100).

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

16655863914420 is a wasteful number, since it uses less digits than its factorization.

16655863914420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23154 (or 23152 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 60.

The spelling of 16655863914420 in words is "sixteen trillion, six hundred fifty-five billion, eight hundred sixty-three million, nine hundred fourteen thousand, four hundred twenty".