6666740040004 has 18 divisors (see below), whose sum is σ = 12823832598542. Its totient is φ = 3030336381600.

The previous prime is 6666740039959. The next prime is 6666740040061. The reversal of 6666740040004 is 4000400476666.

It can be written as a sum of positive squares in only one way, i.e., 6433335105604 + 233404934400 = 2536402^2 + 483120^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6887127657 + ... + 6887128624.

Almost surely, 2^{6666740040004} is an apocalyptic number.

It is an amenable number.

6666740040004 is a deficient number, since it is larger than the sum of its proper divisors (6157092558538).

6666740040004 is a wasteful number, since it uses less digits than its factorization.

6666740040004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13774256307 (or 13774256294 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 6666740040004 in words is "six trillion, six hundred sixty-six billion, seven hundred forty million, forty thousand, four".