16626989611 has 8 divisors (see below), whose sum is σ = 17016061040. Its totient is φ = 16238027232.

The previous prime is 16626989609. The next prime is 16626989641. The reversal of 16626989611 is 11698962661.

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 16626989611 - 2¹ = 16626989609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16626989641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337681 + ... + 383773.

It is an arithmetic number, because the mean of its divisors is an integer number (2127007630).

Almost surely, 2^16626989611 is an apocalyptic number.

16626989611 is a deficient number, since it is larger than the sum of its proper divisors (389071429).

16626989611 is an equidigital number, since it uses as much as digits as its factorization.

16626989611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54525.

The product of its digits is 1679616, while the sum is 55.

The spelling of 16626989611 in words is "sixteen billion, six hundred twenty-six million, nine hundred eighty-nine thousand, six hundred eleven".