16683681554 has 8 divisors (see below), whose sum is σ = 25205562480. Its totient is φ = 8281827396.

The previous prime is 16683681541. The next prime is 16683681563. The reversal of 16683681554 is 45518638661.

It is a happy number.

16683681554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 16683681496 and 16683681505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30006344 + ... + 30006899.

It is an arithmetic number, because the mean of its divisors is an integer number (3150695310).

Almost surely, 2^16683681554 is an apocalyptic number.

16683681554 is a deficient number, since it is larger than the sum of its proper divisors (8521880926).

16683681554 is a wasteful number, since it uses less digits than its factorization.

16683681554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60013384.

The product of its digits is 4147200, while the sum is 53.

The spelling of 16683681554 in words is "sixteen billion, six hundred eighty-three million, six hundred eighty-one thousand, five hundred fifty-four".