3200415666561 has 24 divisors (see below), whose sum is σ = 4866533961120. Its totient is φ = 2021146978176.

The previous prime is 3200415666559. The next prime is 3200415666563. The reversal of 3200415666561 is 1656665140023.

It is an interprime number because it is at equal distance from previous prime (3200415666559) and next prime (3200415666563).

It is not a de Polignac number, because 3200415666561 - 2¹ = 3200415666559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3200415666563) 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 23 ways as a sum of consecutive naturals, for example, 1298770 + ... + 2843876.

It is an arithmetic number, because the mean of its divisors is an integer number (202772248380).

Almost surely, 2^{3200415666561} is an apocalyptic number.

It is an amenable number.

3200415666561 is a deficient number, since it is larger than the sum of its proper divisors (1666118294559).

3200415666561 is a wasteful number, since it uses less digits than its factorization.

3200415666561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557245 (or 1557242 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 3200415666561 in words is "three trillion, two hundred billion, four hundred fifteen million, six hundred sixty-six thousand, five hundred sixty-one".