16538306417 has 8 divisors (see below), whose sum is σ = 16665989760. Its totient is φ = 16411114000.

The previous prime is 16538306381. The next prime is 16538306443. The reversal of 16538306417 is 71460383561.

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 16538306417 - 2¹⁶ = 16538240881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16538308417) 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, 54953 + ... + 189990.

It is an arithmetic number, because the mean of its divisors is an integer number (2083248720).

Almost surely, 2^16538306417 is an apocalyptic number.

It is an amenable number.

16538306417 is a deficient number, since it is larger than the sum of its proper divisors (127683343).

16538306417 is a wasteful number, since it uses less digits than its factorization.

16538306417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245463.

The product of its (nonzero) digits is 362880, while the sum is 44.

Adding to 16538306417 its reverse (71460383561), we get a palindrome (87998689978).

The spelling of 16538306417 in words is "sixteen billion, five hundred thirty-eight million, three hundred six thousand, four hundred seventeen".