16434772201517 has 4 divisors (see below), whose sum is σ = 16512662117376. Its totient is φ = 16356882285660.

The previous prime is 16434772201511. The next prime is 16434772201591. The reversal of 16434772201517 is 71510227743461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16434772201517 - 2¹² = 16434772197421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16434772201511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38944957613 + ... + 38944958034.

It is an arithmetic number, because the mean of its divisors is an integer number (4128165529344).

Almost surely, 2^{16434772201517} is an apocalyptic number.

It is an amenable number.

16434772201517 is a deficient number, since it is larger than the sum of its proper divisors (77889915859).

16434772201517 is an equidigital number, since it uses as much as digits as its factorization.

16434772201517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77889915858.

The product of its (nonzero) digits is 1975680, while the sum is 50.

Adding to 16434772201517 its reverse (71510227743461), we get a palindrome (87944999944978).

The spelling of 16434772201517 in words is "sixteen trillion, four hundred thirty-four billion, seven hundred seventy-two million, two hundred one thousand, five hundred seventeen".