16661124376656 has 40 divisors (see below), whose sum is σ = 43054253574624. Its totient is φ = 5552028693120.

The previous prime is 16661124376613. The next prime is 16661124376703. The reversal of 16661124376656 is 65667342116661.

It is a self number, because there is not a number n which added to its sum of digits gives 16661124376656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52321875 + ... + 52639346.

Almost surely, 2^{16661124376656} is an apocalyptic number.

16661124376656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16661124376656 is an abundant number, since it is smaller than the sum of its proper divisors (26393129197968).

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

16661124376656 is a wasteful number, since it uses less digits than its factorization.

16661124376656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104964539 (or 104964533 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 60.

The spelling of 16661124376656 in words is "sixteen trillion, six hundred sixty-one billion, one hundred twenty-four million, three hundred seventy-six thousand, six hundred fifty-six".