10616111666 has 4 divisors (see below), whose sum is σ = 15924167502. Its totient is φ = 5308055832.

The previous prime is 10616111647. The next prime is 10616111687. The reversal of 10616111666 is 66611161601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66611161601 = 59 ⋅1129002739.

It can be written as a sum of positive squares in only one way, i.e., 6621239641 + 3994872025 = 81371^2 + 63205^2 .

It is a super-2 number, since 2×10616111666² (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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2654027915 + ... + 2654027918.

Almost surely, 2^10616111666 is an apocalyptic number.

10616111666 is a deficient number, since it is larger than the sum of its proper divisors (5308055836).

10616111666 is an equidigital number, since it uses as much as digits as its factorization.

10616111666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308055835.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 10616111666 in words is "ten billion, six hundred sixteen million, one hundred eleven thousand, six hundred sixty-six".