16897617443 has 16 divisors (see below), whose sum is σ = 19521138624. Its totient is φ = 14326761600.

The previous prime is 16897617419. The next prime is 16897617469. The reversal of 16897617443 is 34471679861.

It is a cyclic number.

It is not a de Polignac number, because 16897617443 - 2¹² = 16897613347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16897617493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779021 + ... + 800417.

It is an arithmetic number, because the mean of its divisors is an integer number (1220071164).

Almost surely, 2^16897617443 is an apocalyptic number.

16897617443 is a deficient number, since it is larger than the sum of its proper divisors (2623521181).

16897617443 is a wasteful number, since it uses less digits than its factorization.

16897617443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22622.

The product of its digits is 6096384, while the sum is 56.

The spelling of 16897617443 in words is "sixteen billion, eight hundred ninety-seven million, six hundred seventeen thousand, four hundred forty-three".