2116667166659 has 4 divisors (see below), whose sum is σ = 2136449102904. Its totient is φ = 2096885230416.

The previous prime is 2116667166637. The next prime is 2116667166671. The reversal of 2116667166659 is 9566617666112.

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

It is a cyclic number.

It is not a de Polignac number, because 2116667166659 - 2³⁶ = 2047947689923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116667160659) 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, 9890967962 + ... + 9890968175.

It is an arithmetic number, because the mean of its divisors is an integer number (534112275726).

Almost surely, 2^{2116667166659} is an apocalyptic number.

2116667166659 is a deficient number, since it is larger than the sum of its proper divisors (19781936245).

2116667166659 is a wasteful number, since it uses less digits than its factorization.

2116667166659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19781936244.

The product of its digits is 29393280, while the sum is 62.

The spelling of 2116667166659 in words is "two trillion, one hundred sixteen billion, six hundred sixty-seven million, one hundred sixty-six thousand, six hundred fifty-nine".