13761706666 has 8 divisors (see below), whose sum is σ = 21200467140. Its totient is φ = 6694884288.

The previous prime is 13761706649. The next prime is 13761706687. The reversal of 13761706666 is 66660716731.

13761706666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12231254025 + 1530452641 = 110595^2 + 39121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13761706666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92984431 + ... + 92984578.

Almost surely, 2^13761706666 is an apocalyptic number.

13761706666 is a deficient number, since it is larger than the sum of its proper divisors (7438760474).

13761706666 is a wasteful number, since it uses less digits than its factorization.

13761706666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185969048.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 13761706666 in words is "thirteen billion, seven hundred sixty-one million, seven hundred six thousand, six hundred sixty-six".