16454406561 has 8 divisors (see below), whose sum is σ = 22061774880. Its totient is φ = 10908321312.

The previous prime is 16454406547. The next prime is 16454406569. The reversal of 16454406561 is 16560445461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16454406561 - 2⁶ = 16454406497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16454406569) 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, 15320140 + ... + 15321213.

It is an arithmetic number, because the mean of its divisors is an integer number (2757721860).

Almost surely, 2^16454406561 is an apocalyptic number.

It is an amenable number.

16454406561 is a deficient number, since it is larger than the sum of its proper divisors (5607368319).

16454406561 is a wasteful number, since it uses less digits than its factorization.

16454406561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30641535.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 16454406561 in words is "sixteen billion, four hundred fifty-four million, four hundred six thousand, five hundred sixty-one".