16609287446 has 32 divisors (see below), whose sum is σ = 26572271616. Its totient is φ = 7773948000.

The previous prime is 16609287427. The next prime is 16609287449. The reversal of 16609287446 is 64478290661.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16609287449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197711 + ... + 268901.

It is an arithmetic number, because the mean of its divisors is an integer number (830383488).

Almost surely, 2^16609287446 is an apocalyptic number.

16609287446 is a deficient number, since it is larger than the sum of its proper divisors (9962984170).

16609287446 is a wasteful number, since it uses less digits than its factorization.

16609287446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71348.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 16609287446 in words is "sixteen billion, six hundred nine million, two hundred eighty-seven thousand, four hundred forty-six".