16720241616 has 100 divisors (see below), whose sum is σ = 52115838852. Its totient is φ = 5144684544.

The previous prime is 16720241543. The next prime is 16720241617. The reversal of 16720241616 is 61614202761.

16720241616 is a `hidden beast` number, since 16 + 7 + 2 + 0 + 24 + 1 + 616 = 666.

16720241616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1835265600 + 14884976016 = 42840^2 + 122004^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16720241617) 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 19 ways as a sum of consecutive naturals, for example, 479361 + ... + 513056.

Almost surely, 2^16720241616 is an apocalyptic number.

16720241616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16720241616 is an abundant number, since it is smaller than the sum of its proper divisors (35395597236).

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

16720241616 is a wasteful number, since it uses less digits than its factorization.

16720241616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992450 (or 992435 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 16720241616 in words is "sixteen billion, seven hundred twenty million, two hundred forty-one thousand, six hundred sixteen".