16655416938 has 64 divisors (see below), whose sum is σ = 38502864000. Its totient is φ = 5330328192.

The previous prime is 16655416933. The next prime is 16655416957. The reversal of 16655416938 is 83961455661.

16655416938 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 541 + 6 + 93 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16655416933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250606 + ... + 310022.

It is an arithmetic number, because the mean of its divisors is an integer number (601607250).

Almost surely, 2^16655416938 is an apocalyptic number.

16655416938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16655416938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19251432000).

16655416938 is an abundant number, since it is smaller than the sum of its proper divisors (21847447062).

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

16655416938 is a wasteful number, since it uses less digits than its factorization.

16655416938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59636 (or 59630 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 16655416938 in words is "sixteen billion, six hundred fifty-five million, four hundred sixteen thousand, nine hundred thirty-eight".