13942666384144 has 15 divisors (see below), whose sum is σ = 27013945057717. Its totient is φ = 6971325724096.

The previous prime is 13942666384133. The next prime is 13942666384151. The reversal of 13942666384144 is 44148366624931.

The square root of 13942666384144 is 3733988.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7860957987600 + 6081708396544 = 2803740^2 + 2466112^2 .

It is a super-2 number, since 2×13942666384144² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14469204 + ... + 15402700.

Almost surely, 2^{13942666384144} is an apocalyptic number.

13942666384144 is the 3733988-th square number.

It is an amenable number.

13942666384144 is a deficient number, since it is larger than the sum of its proper divisors (13071278673573).

13942666384144 is an frugal number, since it uses more digits than its factorization.

13942666384144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867002 (or 933499 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 61.

The spelling of 13942666384144 in words is "thirteen trillion, nine hundred forty-two billion, six hundred sixty-six million, three hundred eighty-four thousand, one hundred forty-four".