1446680384561 has 4 divisors (see below), whose sum is σ = 1485779854452. Its totient is φ = 1407580914672.

The previous prime is 1446680384489. The next prime is 1446680384603. The reversal of 1446680384561 is 1654830866441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1009785824161 + 436894560400 = 1004881^2 + 660980^2 .

It is a cyclic number.

It is not a de Polignac number, because 1446680384561 - 2²² = 1446676190257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1446680384497 and 1446680384506.

It is not an unprimeable number, because it can be changed into a prime (1446680374561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19549734890 + ... + 19549734963.

It is an arithmetic number, because the mean of its divisors is an integer number (371444963613).

Almost surely, 2^{1446680384561} is an apocalyptic number.

It is an amenable number.

1446680384561 is a deficient number, since it is larger than the sum of its proper divisors (39099469891).

1446680384561 is an equidigital number, since it uses as much as digits as its factorization.

1446680384561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39099469890.

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 1446680384561 in words is "one trillion, four hundred forty-six billion, six hundred eighty million, three hundred eighty-four thousand, five hundred sixty-one".