1044144780771 has 16 divisors (see below), whose sum is σ = 1392931232000. Its totient is φ = 695727530208.

The previous prime is 1044144780709. The next prime is 1044144780799. The reversal of 1044144780771 is 1770874414401.

It is not a de Polignac number, because 1044144780771 - 2⁷ = 1044144780643 is a prime.

It is a super-2 number, since 2×1044144780771² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1044144780771.

It is not an unprimeable number, because it can be changed into a prime (1044144780671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64179780 + ... + 64196046.

It is an arithmetic number, because the mean of its divisors is an integer number (87058202000).

Almost surely, 2^{1044144780771} is an apocalyptic number.

1044144780771 is a deficient number, since it is larger than the sum of its proper divisors (348786451229).

1044144780771 is a wasteful number, since it uses less digits than its factorization.

1044144780771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26298.

The product of its (nonzero) digits is 702464, while the sum is 48.

The spelling of 1044144780771 in words is "one trillion, forty-four billion, one hundred forty-four million, seven hundred eighty thousand, seven hundred seventy-one".