16428842717 has 4 divisors (see below), whose sum is σ = 18775820256. Its totient is φ = 14081865180.

The previous prime is 16428842657. The next prime is 16428842791. The reversal of 16428842717 is 71724882461.

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 16428842717 - 2¹⁶ = 16428777181 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 (16428842797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1173488759 + ... + 1173488772.

It is an arithmetic number, because the mean of its divisors is an integer number (4693955064).

Almost surely, 2^16428842717 is an apocalyptic number.

It is an amenable number.

16428842717 is a deficient number, since it is larger than the sum of its proper divisors (2346977539).

16428842717 is an equidigital number, since it uses as much as digits as its factorization.

16428842717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346977538.

The product of its digits is 1204224, while the sum is 50.

The spelling of 16428842717 in words is "sixteen billion, four hundred twenty-eight million, eight hundred forty-two thousand, seven hundred seventeen".