1306616656465 has 16 divisors (see below), whose sum is σ = 1586904596928. Its totient is φ = 1032651423936.

The previous prime is 1306616656463. The next prime is 1306616656469. The reversal of 1306616656465 is 5646566166031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1306616656465 - 2¹ = 1306616656463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306616656463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10814167 + ... + 10934323.

It is an arithmetic number, because the mean of its divisors is an integer number (99181537308).

Almost surely, 2^{1306616656465} is an apocalyptic number.

It is an amenable number.

1306616656465 is a deficient number, since it is larger than the sum of its proper divisors (280287940463).

1306616656465 is a wasteful number, since it uses less digits than its factorization.

1306616656465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146448.

The product of its (nonzero) digits is 13996800, while the sum is 55.

The spelling of 1306616656465 in words is "one trillion, three hundred six billion, six hundred sixteen million, six hundred fifty-six thousand, four hundred sixty-five".