16454641665 has 64 divisors (see below), whose sum is σ = 33711022080. Its totient is φ = 6653456640.

The previous prime is 16454641631. The next prime is 16454641699. The reversal of 16454641665 is 56614645461.

It is an interprime number because it is at equal distance from previous prime (16454641631) and next prime (16454641699).

It is not a de Polignac number, because 16454641665 - 2¹⁴ = 16454625281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149785 + ... + 235254.

It is an arithmetic number, because the mean of its divisors is an integer number (526734720).

Almost surely, 2^16454641665 is an apocalyptic number.

16454641665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16454641665 is an abundant number, since it is smaller than the sum of its proper divisors (17256380415).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16454641665 is a wasteful number, since it uses less digits than its factorization.

16454641665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385102.

The product of its digits is 2073600, while the sum is 48.

The spelling of 16454641665 in words is "sixteen billion, four hundred fifty-four million, six hundred forty-one thousand, six hundred sixty-five".