16655705040720 has 80 divisors (see below), whose sum is σ = 51695119961280. Its totient is φ = 4436150648832.

The previous prime is 16655705040701. The next prime is 16655705040749. The reversal of 16655705040720 is 2704050755661.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 16655705040720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41759665 + ... + 42156624.

It is an arithmetic number, because the mean of its divisors is an integer number (646188999516).

Almost surely, 2^{16655705040720} is an apocalyptic number.

16655705040720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16655705040720 is an abundant number, since it is smaller than the sum of its proper divisors (35039414920560).

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

16655705040720 is a wasteful number, since it uses less digits than its factorization.

16655705040720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83917132 (or 83917126 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 16655705040720 in words is "sixteen trillion, six hundred fifty-five billion, seven hundred five million, forty thousand, seven hundred twenty".