16160720720 has 40 divisors (see below), whose sum is σ = 38490114600. Its totient is φ = 6306621440.

The previous prime is 16160720689. The next prime is 16160720743. The reversal of 16160720720 is 2702706161.

It can be written as a sum of positive squares in 4 ways, for example, as 578691136 + 15582029584 = 24056^2 + 124828^2 .

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

It is a super-2 number, since 2×16160720720² (a number of 21 digits) contains 22 as substring.

16160720720 is a modest number, since divided by 720720 gives 16160 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2460245 + ... + 2466804.

It is an arithmetic number, because the mean of its divisors is an integer number (962252865).

Almost surely, 2^16160720720 is an apocalyptic number.

16160720720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16160720720 is an abundant number, since it is smaller than the sum of its proper divisors (22329393880).

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

16160720720 is a wasteful number, since it uses less digits than its factorization.

16160720720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4927103 (or 4927097 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 16160720720 in words is "sixteen billion, one hundred sixty million, seven hundred twenty thousand, seven hundred twenty".