16481291905 has 8 divisors (see below), whose sum is σ = 21298900392. Its totient is φ = 12170800128.

The previous prime is 16481291891. The next prime is 16481291941. The reversal of 16481291905 is 50919218461.

It is a happy number.

16481291905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1762992144 + 14718299761 = 41988^2 + 121319^2 .

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 16481291905 - 2⁵ = 16481291873 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 126779104 + ... + 126779233.

It is an arithmetic number, because the mean of its divisors is an integer number (2662362549).

Almost surely, 2^16481291905 is an apocalyptic number.

It is an amenable number.

16481291905 is a deficient number, since it is larger than the sum of its proper divisors (4817608487).

16481291905 is a wasteful number, since it uses less digits than its factorization.

16481291905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253558355.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 16481291905 in words is "sixteen billion, four hundred eighty-one million, two hundred ninety-one thousand, nine hundred five".