66617168406 has 8 divisors (see below), whose sum is σ = 133234336824. Its totient is φ = 22205722800.

The previous prime is 66617168389. The next prime is 66617168411. The reversal of 66617168406 is 60486171666.

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

66617168406 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5551430695 + ... + 5551430706.

It is an arithmetic number, because the mean of its divisors is an integer number (16654292103).

Almost surely, 2^66617168406 is an apocalyptic number.

66617168406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66617168406 is a wasteful number, since it uses less digits than its factorization.

66617168406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11102861406.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 66617168406 in words is "sixty-six billion, six hundred seventeen million, one hundred sixty-eight thousand, four hundred six".