66217163082 has 32 divisors (see below), whose sum is σ = 153918835200. Its totient is φ = 18598524528.

The previous prime is 66217163071. The next prime is 66217163099. The reversal of 66217163082 is 28036171266.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13358532 + ... + 13363487.

It is an arithmetic number, because the mean of its divisors is an integer number (4809963600).

Almost surely, 2^66217163082 is an apocalyptic number.

66217163082 is an abundant number, since it is smaller than the sum of its proper divisors (87701672118).

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

66217163082 is a wasteful number, since it uses less digits than its factorization.

66217163082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26722090.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 66217163082 in words is "sixty-six billion, two hundred seventeen million, one hundred sixty-three thousand, eighty-two".