2016171721006 has 16 divisors (see below), whose sum is σ = 3094860536064. Its totient is φ = 984555654264.

The previous prime is 2016171720929. The next prime is 2016171721021. The reversal of 2016171721006 is 6001271716102.

It is a congruent number.

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, 36070 + ... + 2008393.

It is an arithmetic number, because the mean of its divisors is an integer number (193428783504).

Almost surely, 2^{2016171721006} is an apocalyptic number.

2016171721006 is a deficient number, since it is larger than the sum of its proper divisors (1078688815058).

2016171721006 is a wasteful number, since it uses less digits than its factorization.

2016171721006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055975.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 2016171721006 in words is "two trillion, sixteen billion, one hundred seventy-one million, seven hundred twenty-one thousand, six".