4085172555666 has 16 divisors (see below), whose sum is σ = 8170400352000. Its totient is φ = 1361714978448.

The previous prime is 4085172555623. The next prime is 4085172555683. The reversal of 4085172555666 is 6665552715804.

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, 1307266 + ... + 3143133.

It is an arithmetic number, because the mean of its divisors is an integer number (510650022000).

Almost surely, 2^{4085172555666} is an apocalyptic number.

4085172555666 is an abundant number, since it is smaller than the sum of its proper divisors (4085227796334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4085172555666 is a wasteful number, since it uses less digits than its factorization.

4085172555666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603393.

The product of its (nonzero) digits is 60480000, while the sum is 60.

The spelling of 4085172555666 in words is "four trillion, eighty-five billion, one hundred seventy-two million, five hundred fifty-five thousand, six hundred sixty-six".