66170616305 has 8 divisors (see below), whose sum is σ = 79660062144. Its totient is φ = 52766278000.

The previous prime is 66170616301. The next prime is 66170616307. The reversal of 66170616305 is 50361607166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66170616305 - 2² = 66170616301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66170616301) 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, 21275171 + ... + 21278280.

It is an arithmetic number, because the mean of its divisors is an integer number (9957507768).

Almost surely, 2^66170616305 is an apocalyptic number.

It is an amenable number.

66170616305 is a deficient number, since it is larger than the sum of its proper divisors (13489445839).

66170616305 is a wasteful number, since it uses less digits than its factorization.

66170616305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42553767.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 66170616305 in words is "sixty-six billion, one hundred seventy million, six hundred sixteen thousand, three hundred five".