1444020553566 has 48 divisors (see below), whose sum is σ = 3202851721680. Its totient is φ = 470020037760.

The previous prime is 1444020553553. The next prime is 1444020553571. The reversal of 1444020553566 is 6653550204441.

1444020553566 is a `hidden beast` number, since 1 + 4 + 4 + 40 + 2 + 0 + 553 + 56 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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, 3385551 + ... + 3788138.

It is an arithmetic number, because the mean of its divisors is an integer number (66726077535).

Almost surely, 2^{1444020553566} is an apocalyptic number.

1444020553566 is an abundant number, since it is smaller than the sum of its proper divisors (1758831168114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444020553566 is a wasteful number, since it uses less digits than its factorization.

1444020553566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7173961 (or 7173958 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 1444020553566 in words is "one trillion, four hundred forty-four billion, twenty million, five hundred fifty-three thousand, five hundred sixty-six".