1444047684681 has 64 divisors (see below), whose sum is σ = 2254003863552. Its totient is φ = 805198147392.

The previous prime is 1444047684659. The next prime is 1444047684707. The reversal of 1444047684681 is 1864867404441.

It is a happy number.

It is not a de Polignac number, because 1444047684681 - 2¹⁷ = 1444047553609 is a prime.

It is a super-2 number, since 2×1444047684681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1444047689681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 757234330 + ... + 757236236.

It is an arithmetic number, because the mean of its divisors is an integer number (35218810368).

Almost surely, 2^{1444047684681} is an apocalyptic number.

It is an amenable number.

1444047684681 is a deficient number, since it is larger than the sum of its proper divisors (809956178871).

1444047684681 is a wasteful number, since it uses less digits than its factorization.

1444047684681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858.

The product of its (nonzero) digits is 16515072, while the sum is 57.

The spelling of 1444047684681 in words is "one trillion, four hundred forty-four billion, forty-seven million, six hundred eighty-four thousand, six hundred eighty-one".