2116430660066 has 8 divisors (see below), whose sum is σ = 3174654057564. Its totient is φ = 1058212640880.

The previous prime is 2116430660063. The next prime is 2116430660089. The reversal of 2116430660066 is 6600660346112.

It can be written as a sum of positive squares in 2 ways, for example, as 2086496469841 + 29934190225 = 1444471^2 + 173015^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2116430660063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147725 + ... + 2062688.

Almost surely, 2^{2116430660066} is an apocalyptic number.

2116430660066 is a deficient number, since it is larger than the sum of its proper divisors (1058223397498).

2116430660066 is a wasteful number, since it uses less digits than its factorization.

2116430660066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689156.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 2116430660066 in words is "two trillion, one hundred sixteen billion, four hundred thirty million, six hundred sixty thousand, sixty-six".