16809940481 has 8 divisors (see below), whose sum is σ = 16912800000. Its totient is φ = 16707352480.

The previous prime is 16809940463. The next prime is 16809940487. The reversal of 16809940481 is 18404990861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16809940481 - 2⁶ = 16809940417 is a prime.

It is a super-2 number, since 2×16809940481² (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 (16809940487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57020 + ... + 192018.

It is an arithmetic number, because the mean of its divisors is an integer number (2114100000).

Almost surely, 2^16809940481 is an apocalyptic number.

It is an amenable number.

16809940481 is a deficient number, since it is larger than the sum of its proper divisors (102859519).

16809940481 is a wasteful number, since it uses less digits than its factorization.

16809940481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135759.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 16809940481 in words is "sixteen billion, eight hundred nine million, nine hundred forty thousand, four hundred eighty-one".