16945854961 has 8 divisors (see below), whose sum is σ = 19684178624. Its totient is φ = 14286903120.

The previous prime is 16945854953. The next prime is 16945854967.

16945854961 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 16945854961 - 2³ = 16945854953 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16945854896 and 16945854905.

It is not an unprimeable number, because it can be changed into a prime (16945854967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19842495 + ... + 19843348.

It is an arithmetic number, because the mean of its divisors is an integer number (2460522328).

Almost surely, 2^16945854961 is an apocalyptic number.

It is an amenable number.

16945854961 is a deficient number, since it is larger than the sum of its proper divisors (2738323663).

16945854961 is an equidigital number, since it uses as much as digits as its factorization.

16945854961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39685911.

The product of its digits is 9331200, while the sum is 58.

The spelling of 16945854961 in words is "sixteen billion, nine hundred forty-five million, eight hundred fifty-four thousand, nine hundred sixty-one".