16720463146730 has 96 divisors (see below), whose sum is σ = 37084639698000. Its totient is φ = 5393387231232.

The previous prime is 16720463146721. The next prime is 16720463146859. The reversal of 16720463146730 is 3764136402761.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12262204038049 + 4458259108681 = 3501743^2 + 2111459^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20839436 + ... + 21626904.

Almost surely, 2^{16720463146730} is an apocalyptic number.

16720463146730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16720463146730 is an abundant number, since it is smaller than the sum of its proper divisors (20364176551270).

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

16720463146730 is a wasteful number, since it uses less digits than its factorization.

16720463146730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790056 (or 790049 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 16720463146730 in words is "sixteen trillion, seven hundred twenty billion, four hundred sixty-three million, one hundred forty-six thousand, seven hundred thirty".