1449285784666 has 4 divisors (see below), whose sum is σ = 2173928677002. Its totient is φ = 724642892332.

The previous prime is 1449285784651. The next prime is 1449285784679. The reversal of 1449285784666 is 6664875829441.

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

It can be written as a sum of positive squares in only one way, i.e., 1082983642225 + 366302142441 = 1040665^2 + 605229^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1449285784595 and 1449285784604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362321446165 + ... + 362321446168.

Almost surely, 2^{1449285784666} is an apocalyptic number.

1449285784666 is a deficient number, since it is larger than the sum of its proper divisors (724642892336).

1449285784666 is an equidigital number, since it uses as much as digits as its factorization.

1449285784666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724642892335.

The product of its digits is 557383680, while the sum is 70.

The spelling of 1449285784666 in words is "one trillion, four hundred forty-nine billion, two hundred eighty-five million, seven hundred eighty-four thousand, six hundred sixty-six".