16771661476746 has 128 divisors (see below), whose sum is σ = 38402844235776. Its totient is φ = 4833521172480.

The previous prime is 16771661476673. The next prime is 16771661476751. The reversal of 16771661476746 is 64767416617761.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 213359626 + ... + 213438218.

It is an arithmetic number, because the mean of its divisors is an integer number (300022220592).

Almost surely, 2^{16771661476746} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16771661476746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19201422117888).

16771661476746 is an abundant number, since it is smaller than the sum of its proper divisors (21631182759030).

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

16771661476746 is a wasteful number, since it uses less digits than its factorization.

16771661476746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79436.

The product of its digits is 298722816, while the sum is 69.

The spelling of 16771661476746 in words is "sixteen trillion, seven hundred seventy-one billion, six hundred sixty-one million, four hundred seventy-six thousand, seven hundred forty-six".