11111656600666 has 8 divisors (see below), whose sum is σ = 17544720948480. Its totient is φ = 5263416284508.

The previous prime is 11111656600651. The next prime is 11111656600697. The reversal of 11111656600666 is 66600665611111.

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

It is a super-2 number, since 2×11111656600666² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146206007866 + ... + 146206007941.

It is an arithmetic number, because the mean of its divisors is an integer number (2193090118560).

Almost surely, 2^{11111656600666} is an apocalyptic number.

11111656600666 is a deficient number, since it is larger than the sum of its proper divisors (6433064347814).

11111656600666 is a wasteful number, since it uses less digits than its factorization.

11111656600666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292412015828.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 11111656600666 in words is "eleven trillion, one hundred eleven billion, six hundred fifty-six million, six hundred thousand, six hundred sixty-six".