3456005221666 has 32 divisors (see below), whose sum is σ = 5292326269440. Its totient is φ = 1692150868800.

The previous prime is 3456005221661. The next prime is 3456005221699. The reversal of 3456005221666 is 6661225006543.

3456005221666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3456005221661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144524251 + ... + 144548161.

It is an arithmetic number, because the mean of its divisors is an integer number (165385195920).

Almost surely, 2^{3456005221666} is an apocalyptic number.

3456005221666 is a deficient number, since it is larger than the sum of its proper divisors (1836321047774).

3456005221666 is a wasteful number, since it uses less digits than its factorization.

3456005221666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29170.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 3456005221666 in words is "three trillion, four hundred fifty-six billion, five million, two hundred twenty-one thousand, six hundred sixty-six".