1066544565444 has 48 divisors (see below), whose sum is σ = 2832557394240. Its totient is φ = 346843759680.

The previous prime is 1066544565407. The next prime is 1066544565469. The reversal of 1066544565444 is 4445654456601.

1066544565444 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 5 + 44 + 56 + 544 + 4 = 666.

It is a super-2 number, since 2×1066544565444² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120427434 + ... + 120436289.

It is an arithmetic number, because the mean of its divisors is an integer number (59011612380).

Almost surely, 2^{1066544565444} is an apocalyptic number.

It is an amenable number.

1066544565444 is an abundant number, since it is smaller than the sum of its proper divisors (1766012828796).

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

1066544565444 is a wasteful number, since it uses less digits than its factorization.

1066544565444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240863777 (or 240863769 counting only the distinct ones).

The product of its (nonzero) digits is 27648000, while the sum is 54.

The spelling of 1066544565444 in words is "one trillion, sixty-six billion, five hundred forty-four million, five hundred sixty-five thousand, four hundred forty-four".