16578861063 has 4 divisors (see below), whose sum is σ = 22105148088. Its totient is φ = 11052574040.

The previous prime is 16578861043. The next prime is 16578861073. The reversal of 16578861063 is 36016887561.

16578861063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16578861063 - 2⁵ = 16578861031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16578860997 and 16578861015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16578861043) by changing a digit.

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, 2763143508 + ... + 2763143513.

It is an arithmetic number, because the mean of its divisors is an integer number (5526287022).

Almost surely, 2^16578861063 is an apocalyptic number.

16578861063 is a deficient number, since it is larger than the sum of its proper divisors (5526287025).

16578861063 is an equidigital number, since it uses as much as digits as its factorization.

16578861063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5526287024.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 16578861063 in words is "sixteen billion, five hundred seventy-eight million, eight hundred sixty-one thousand, sixty-three".