2005066701667 has 4 divisors (see below), whose sum is σ = 2011391833536. Its totient is φ = 1998741569800.

The previous prime is 2005066701647. The next prime is 2005066701679. The reversal of 2005066701667 is 7661076605002.

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 2005066701667 - 2¹¹ = 2005066699619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005066701637) 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, 3162565459 + ... + 3162566092.

It is an arithmetic number, because the mean of its divisors is an integer number (502847958384).

Almost surely, 2^{2005066701667} is an apocalyptic number.

2005066701667 is a deficient number, since it is larger than the sum of its proper divisors (6325131869).

2005066701667 is an equidigital number, since it uses as much as digits as its factorization.

2005066701667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325131868.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 2005066701667 in words is "two trillion, five billion, sixty-six million, seven hundred one thousand, six hundred sixty-seven".