16220376646 has 16 divisors (see below), whose sum is σ = 26303315760. Its totient is φ = 7475677920.

The previous prime is 16220376643. The next prime is 16220376661. The reversal of 16220376646 is 64667302261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220376643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5766865 + ... + 5769676.

It is an arithmetic number, because the mean of its divisors is an integer number (1643957235).

Almost surely, 2^16220376646 is an apocalyptic number.

16220376646 is a deficient number, since it is larger than the sum of its proper divisors (10082939114).

16220376646 is a wasteful number, since it uses less digits than its factorization.

16220376646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536599.

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 16220376646 in words is "sixteen billion, two hundred twenty million, three hundred seventy-six thousand, six hundred forty-six".