16611001660674 has 72 divisors (see below), whose sum is σ = 37053362810880. Its totient is φ = 5377288718880.

The previous prime is 16611001660667. The next prime is 16611001660679. The reversal of 16611001660674 is 47606610011661.

16611001660674 is a `hidden beast` number, since 16 + 6 + 1 + 10 + 0 + 16 + 606 + 7 + 4 = 666.

16611001660674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16611001660679) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3721599 + ... + 6860925.

It is an arithmetic number, because the mean of its divisors is an integer number (514630039040).

Almost surely, 2^{16611001660674} is an apocalyptic number.

16611001660674 is an abundant number, since it is smaller than the sum of its proper divisors (20442361150206).

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

16611001660674 is a wasteful number, since it uses less digits than its factorization.

16611001660674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139536 (or 3139472 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 16611001660674 in words is "sixteen trillion, six hundred eleven billion, one million, six hundred sixty thousand, six hundred seventy-four".