1111016111666 has 4 divisors (see below), whose sum is σ = 1666524167502. Its totient is φ = 555508055832.

The previous prime is 1111016111641. The next prime is 1111016111701. The reversal of 1111016111666 is 6661116101111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1064477110225 + 46539001441 = 1031735^2 + 215729^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277754027915 + ... + 277754027918.

Almost surely, 2^{1111016111666} is an apocalyptic number.

1111016111666 is a deficient number, since it is larger than the sum of its proper divisors (555508055836).

1111016111666 is an equidigital number, since it uses as much as digits as its factorization.

1111016111666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555508055835.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 1111016111666 in words is "one trillion, one hundred eleven billion, sixteen million, one hundred eleven thousand, six hundred sixty-six".