1050666109649 has 8 divisors (see below), whose sum is σ = 1142689418472. Its totient is φ = 960243206400.

The previous prime is 1050666109631. The next prime is 1050666109673. The reversal of 1050666109649 is 9469016660501.

It can be written as a sum of positive squares in 4 ways, for example, as 431701561600 + 618964548049 = 657040^2 + 786743^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1050666109649 - 2¹² = 1050666105553 is a prime.

It is a super-2 number, since 2×1050666109649² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1050666109649.

It is not an unprimeable number, because it can be changed into a prime (1050666109849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400100024 + ... + 400102649.

It is an arithmetic number, because the mean of its divisors is an integer number (142836177309).

Almost surely, 2^{1050666109649} is an apocalyptic number.

It is an amenable number.

1050666109649 is a deficient number, since it is larger than the sum of its proper divisors (92023308823).

1050666109649 is a wasteful number, since it uses less digits than its factorization.

1050666109649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800202787.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 1050666109649 in words is "one trillion, fifty billion, six hundred sixty-six million, one hundred nine thousand, six hundred forty-nine".