16390988105 has 8 divisors (see below), whose sum is σ = 19672587072. Its totient is φ = 13110522928.

The previous prime is 16390988101. The next prime is 16390988129. The reversal of 16390988105 is 50188909361.

It is a happy number.

16390988105 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 cyclic number.

It is not a de Polignac number, because 16390988105 - 2² = 16390988101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16390988101) 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 7 ways as a sum of consecutive naturals, for example, 251309 + ... + 309738.

It is an arithmetic number, because the mean of its divisors is an integer number (2459073384).

Almost surely, 2^16390988105 is an apocalyptic number.

It is an amenable number.

16390988105 is a deficient number, since it is larger than the sum of its proper divisors (3281598967).

16390988105 is an equidigital number, since it uses as much as digits as its factorization.

16390988105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566895.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 16390988105 in words is "sixteen billion, three hundred ninety million, nine hundred eighty-eight thousand, one hundred five".