16621265606 has 32 divisors (see below), whose sum is σ = 28392166656. Its totient is φ = 7223788000.

The previous prime is 16621265599. The next prime is 16621265611. The reversal of 16621265606 is 60656212661.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 1746521 + ... + 1756011.

It is an arithmetic number, because the mean of its divisors is an integer number (887255208).

Almost surely, 2^16621265606 is an apocalyptic number.

16621265606 is a deficient number, since it is larger than the sum of its proper divisors (11770901050).

16621265606 is a wasteful number, since it uses less digits than its factorization.

16621265606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12988.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 16621265606 in words is "sixteen billion, six hundred twenty-one million, two hundred sixty-five thousand, six hundred six".