2116667166665 has 16 divisors (see below), whose sum is σ = 2575842062976. Its totient is φ = 1669440662400.

The previous prime is 2116667166637. The next prime is 2116667166671. The reversal of 2116667166665 is 5666617666112.

It is not a de Polignac number, because 2116667166665 - 2¹⁴ = 2116667150281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25977629 + ... + 26058981.

It is an arithmetic number, because the mean of its divisors is an integer number (160990128936).

Almost surely, 2^{2116667166665} is an apocalyptic number.

It is an amenable number.

2116667166665 is a deficient number, since it is larger than the sum of its proper divisors (459174896311).

2116667166665 is an equidigital number, since it uses as much as digits as its factorization.

2116667166665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154720.

The product of its digits is 19595520, while the sum is 59.

The spelling of 2116667166665 in words is "two trillion, one hundred sixteen billion, six hundred sixty-seven million, one hundred sixty-six thousand, six hundred sixty-five".