16440450289 has 8 divisors (see below), whose sum is σ = 16552581120. Its totient is φ = 16328545200.

The previous prime is 16440450281. The next prime is 16440450293. The reversal of 16440450289 is 98205404461.

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 16440450289 - 2³ = 16440450281 is a prime.

It is a super-3 number, since 3×16440450289³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16440450281) 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, 91024 + ... + 202894.

It is an arithmetic number, because the mean of its divisors is an integer number (2069072640).

Almost surely, 2^16440450289 is an apocalyptic number.

It is an amenable number.

16440450289 is a deficient number, since it is larger than the sum of its proper divisors (112130831).

16440450289 is a wasteful number, since it uses less digits than its factorization.

16440450289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112871.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 16440450289 in words is "sixteen billion, four hundred forty million, four hundred fifty thousand, two hundred eighty-nine".