16980435481 has 9 divisors (see below), whose sum is σ = 17075964373. Its totient is φ = 16885440220.

The previous prime is 16980435443. The next prime is 16980435497. The reversal of 16980435481 is 18453408961.

It is a happy number.

The square root of 16980435481 is 130309.

It is a perfect power (a square), and thus also a powerful number.

16980435481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16980435481 - 2⁹ = 16980434969 is a prime.

It is a super-2 number, since 2×16980435481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16980435881) 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 8 ways as a sum of consecutive naturals, for example, 40525890 + ... + 40526308.

Almost surely, 2^16980435481 is an apocalyptic number.

16980435481 is the 130309-th square number.

16980435481 is the 65155-th centered octagonal number.

It is an amenable number.

16980435481 is a deficient number, since it is larger than the sum of its proper divisors (95528892).

16980435481 is an frugal number, since it uses more digits than its factorization.

16980435481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

Multiplying 16980435481 by its sum of digits (49), we get a square (832041338569 = 912163²).

The spelling of 16980435481 in words is "sixteen billion, nine hundred eighty million, four hundred thirty-five thousand, four hundred eighty-one".