16611607012 has 144 divisors (see below), whose sum is σ = 39842748288. Its totient is φ = 5957038080.

The previous prime is 16611607007. The next prime is 16611607099. The reversal of 16611607012 is 21070611661.

It is a super-2 number, since 2×16611607012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13649028 + ... + 13650244.

It is an arithmetic number, because the mean of its divisors is an integer number (276685752).

Almost surely, 2^16611607012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16611607012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19921374144).

16611607012 is an abundant number, since it is smaller than the sum of its proper divisors (23231141276).

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

16611607012 is a wasteful number, since it uses less digits than its factorization.

16611607012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 16611607012 in words is "sixteen billion, six hundred eleven million, six hundred seven thousand, twelve".