1408844668685 has 8 divisors (see below), whose sum is σ = 1790061461496. Its totient is φ = 1060777162240.

The previous prime is 1408844668643. The next prime is 1408844668697. The reversal of 1408844668685 is 5868664488041.

It can be written as a sum of positive squares in 4 ways, for example, as 28656734089 + 1380187934596 = 169283^2 + 1174814^2 .

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

It is not a de Polignac number, because 1408844668685 - 2¹⁶ = 1408844603149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8287321496 + ... + 8287321665.

It is an arithmetic number, because the mean of its divisors is an integer number (223757682687).

Almost surely, 2^{1408844668685} is an apocalyptic number.

It is an amenable number.

1408844668685 is a deficient number, since it is larger than the sum of its proper divisors (381216792811).

1408844668685 is a wasteful number, since it uses less digits than its factorization.

1408844668685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16574643183.

The product of its (nonzero) digits is 283115520, while the sum is 68.

The spelling of 1408844668685 in words is "one trillion, four hundred eight billion, eight hundred forty-four million, six hundred sixty-eight thousand, six hundred eighty-five".