1606213565705 has 32 divisors (see below), whose sum is σ = 2210663508480. Its totient is φ = 1097480217600.

The previous prime is 1606213565681. The next prime is 1606213565713. The reversal of 1606213565705 is 5075653126061.

It is not a de Polignac number, because 1606213565705 - 2¹⁶ = 1606213500169 is a prime.

It is a super-3 number, since 3×1606213565705³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1606213565705.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16297937 + ... + 16396193.

It is an arithmetic number, because the mean of its divisors is an integer number (69083234640).

Almost surely, 2^{1606213565705} is an apocalyptic number.

It is an amenable number.

1606213565705 is a deficient number, since it is larger than the sum of its proper divisors (604449942775).

1606213565705 is a wasteful number, since it uses less digits than its factorization.

1606213565705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99929.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 1606213565705 in words is "one trillion, six hundred six billion, two hundred thirteen million, five hundred sixty-five thousand, seven hundred five".