4377709666861 has 8 divisors (see below), whose sum is σ = 4568095041984. Its totient is φ = 4187328472800.

The previous prime is 4377709666849. The next prime is 4377709666901. The reversal of 4377709666861 is 1686669077734.

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

It is a cyclic number.

It is not a de Polignac number, because 4377709666861 - 2¹⁵ = 4377709634093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4377709666261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1196670 + ... + 3191776.

It is an arithmetic number, because the mean of its divisors is an integer number (571011880248).

Almost surely, 2^{4377709666861} is an apocalyptic number.

It is an amenable number.

4377709666861 is a deficient number, since it is larger than the sum of its proper divisors (190385375123).

4377709666861 is a wasteful number, since it uses less digits than its factorization.

4377709666861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090531.

The product of its (nonzero) digits is 384072192, while the sum is 70.

The spelling of 4377709666861 in words is "four trillion, three hundred seventy-seven billion, seven hundred nine million, six hundred sixty-six thousand, eight hundred sixty-one".