166021564203016 has 64 divisors (see below), whose sum is σ = 332874933350400. Its totient is φ = 77435292211200.

The previous prime is 166021564202983. The next prime is 166021564203017. The reversal of 166021564203016 is 610302465120661.

It is not an unprimeable number, because it can be changed into a prime (166021564203017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15464761 + ... + 23899831.

It is an arithmetic number, because the mean of its divisors is an integer number (5201170833600).

Almost surely, 2^{166021564203016} is an apocalyptic number.

It is an amenable number.

166021564203016 is an abundant number, since it is smaller than the sum of its proper divisors (166853369147384).

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

166021564203016 is a wasteful number, since it uses less digits than its factorization.

166021564203016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8437750 (or 8437746 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 166021564203016 in words is "one hundred sixty-six trillion, twenty-one billion, five hundred sixty-four million, two hundred three thousand, sixteen".