16955644680 has 512 divisors, whose sum is σ = 63479808000. Its totient is φ = 3997486080.

The previous prime is 16955644639. The next prime is 16955644747. The reversal of 16955644680 is 8644655961.

16955644680 is a `hidden beast` number, since 1 + 6 + 9 + 556 + 4 + 4 + 6 + 80 = 666.

It is a super-3 number, since 3×16955644680³ (a number of 32 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 70944001 + ... + 70944239.

It is an arithmetic number, because the mean of its divisors is an integer number (123984000).

Almost surely, 2^16955644680 is an apocalyptic number.

16955644680 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 16955644680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31739904000).

16955644680 is an abundant number, since it is smaller than the sum of its proper divisors (46524163320).

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

16955644680 is a wasteful number, since it uses less digits than its factorization.

16955644680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 16955644680 in words is "sixteen billion, nine hundred fifty-five million, six hundred forty-four thousand, six hundred eighty".