16611933699076 has 27 divisors (see below), whose sum is σ = 29225058549141. Its totient is φ = 8262148203264.

The previous prime is 16611933699041. The next prime is 16611933699089. The reversal of 16611933699076 is 67099633911661.

The square root of 16611933699076 is 4075774.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4024878564100 + 12587055134976 = 2006210^2 + 3547824^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1573243485 + ... + 1573254043.

Almost surely, 2^{16611933699076} is an apocalyptic number.

16611933699076 is the 4075774-th square number.

It is an amenable number.

16611933699076 is a deficient number, since it is larger than the sum of its proper divisors (12613124850065).

16611933699076 is an frugal number, since it uses more digits than its factorization.

16611933699076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21508 (or 10754 counting only the distinct ones).

The product of its (nonzero) digits is 59521392, while the sum is 67.

The spelling of 16611933699076 in words is "sixteen trillion, six hundred eleven billion, nine hundred thirty-three million, six hundred ninety-nine thousand, seventy-six".