16553380720 has 40 divisors (see below), whose sum is σ = 39013837776. Its totient is φ = 6530646528.

The previous prime is 16553380703. The next prime is 16553380721. The reversal of 16553380720 is 2708335561.

16553380720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×16553380720² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16553380721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1411402 + ... + 1423081.

Almost surely, 2^16553380720 is an apocalyptic number.

16553380720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16553380720 is an abundant number, since it is smaller than the sum of its proper divisors (22460457056).

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

16553380720 is a wasteful number, since it uses less digits than its factorization.

16553380720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834569 (or 2834563 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 16553380720 in words is "sixteen billion, five hundred fifty-three million, three hundred eighty thousand, seven hundred twenty".