4491917494066 has 16 divisors (see below), whose sum is σ = 7208771823360. Its totient is φ = 2092869236880.

The previous prime is 4491917494063. The next prime is 4491917494073. The reversal of 4491917494066 is 6604947191944.

It is a junction number, because it is equal to n+sod(n) for n = 4491917493989 and 4491917494007.

It is not an unprimeable number, because it can be changed into a prime (4491917494063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 968918626 + ... + 968923261.

It is an arithmetic number, because the mean of its divisors is an integer number (450548238960).

Almost surely, 2^{4491917494066} is an apocalyptic number.

4491917494066 is a deficient number, since it is larger than the sum of its proper divisors (2716854329294).

4491917494066 is a wasteful number, since it uses less digits than its factorization.

4491917494066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937841969.

The product of its (nonzero) digits is 47029248, while the sum is 64.

The spelling of 4491917494066 in words is "four trillion, four hundred ninety-one billion, nine hundred seventeen million, four hundred ninety-four thousand, sixty-six".