16503770089 has 3 divisors (see below), whose sum is σ = 16503898557. Its totient is φ = 16503641622.

The previous prime is 16503770081. The next prime is 16503770099. The reversal of 16503770089 is 98007730561.

The square root of 16503770089 is 128467.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 16503770089 - 2³ = 16503770081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16503770081) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 64234 + ... + 192700.

It is an arithmetic number, because the mean of its divisors is an integer number (5501299519).

Almost surely, 2^16503770089 is an apocalyptic number.

16503770089 is the 128467-th square number.

16503770089 is the 64234-th centered octagonal number.

It is an amenable number.

16503770089 is a deficient number, since it is larger than the sum of its proper divisors (128468).

16503770089 is an frugal number, since it uses more digits than its factorization.

16503770089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256934 (or 128467 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 16503770089 in words is "sixteen billion, five hundred three million, seven hundred seventy thousand, eighty-nine".