16447781336 has 16 divisors (see below), whose sum is σ = 35245245840. Its totient is φ = 7049049120.

The previous prime is 16447781297. The next prime is 16447781407. The reversal of 16447781336 is 63318774461.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 146855135 + ... + 146855246.

It is an arithmetic number, because the mean of its divisors is an integer number (2202827865).

Almost surely, 2^16447781336 is an apocalyptic number.

It is an amenable number.

16447781336 is an abundant number, since it is smaller than the sum of its proper divisors (18797464504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16447781336 is a wasteful number, since it uses less digits than its factorization.

16447781336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293710394 (or 293710390 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The spelling of 16447781336 in words is "sixteen billion, four hundred forty-seven million, seven hundred eighty-one thousand, three hundred thirty-six".