1606327774465 has 8 divisors (see below), whose sum is σ = 1927642493160. Its totient is φ = 1285029443712.

The previous prime is 1606327774439. The next prime is 1606327774489. The reversal of 1606327774465 is 5644777236061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28560662001 + 1577767112464 = 168999^2 + 1256092^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1606327774465 - 2⁵ = 1606327774433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3880300 + ... + 4274269.

It is an arithmetic number, because the mean of its divisors is an integer number (240955311645).

Almost surely, 2^{1606327774465} is an apocalyptic number.

It is an amenable number.

1606327774465 is a deficient number, since it is larger than the sum of its proper divisors (321314718695).

1606327774465 is an equidigital number, since it uses as much as digits as its factorization.

1606327774465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193971.

The product of its (nonzero) digits is 35562240, while the sum is 58.

The spelling of 1606327774465 in words is "one trillion, six hundred six billion, three hundred twenty-seven million, seven hundred seventy-four thousand, four hundred sixty-five".