16765782241 has 4 divisors (see below), whose sum is σ = 18055457812. Its totient is φ = 15476106672.

The previous prime is 16765782239. The next prime is 16765782277. The reversal of 16765782241 is 14228756761.

16765782241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14228756761 = 229 ⋅62134309.

It can be written as a sum of positive squares in 2 ways, for example, as 1557959841 + 15207822400 = 39471^2 + 123320^2 .

It is not a de Polignac number, because 16765782241 - 2¹ = 16765782239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16765782641) 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 3 ways as a sum of consecutive naturals, for example, 644837766 + ... + 644837791.

It is an arithmetic number, because the mean of its divisors is an integer number (4513864453).

Almost surely, 2^16765782241 is an apocalyptic number.

It is an amenable number.

16765782241 is a deficient number, since it is larger than the sum of its proper divisors (1289675571).

16765782241 is a wasteful number, since it uses less digits than its factorization.

16765782241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289675570.

The product of its digits is 1128960, while the sum is 49.

The spelling of 16765782241 in words is "sixteen billion, seven hundred sixty-five million, seven hundred eighty-two thousand, two hundred forty-one".