66217575054 has 8 divisors (see below), whose sum is σ = 132435150120. Its totient is φ = 22072525016.

The previous prime is 66217575043. The next prime is 66217575071. The reversal of 66217575054 is 45057571266.

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

66217575054 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 66217574994 and 66217575012.

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, 5518131249 + ... + 5518131260.

It is an arithmetic number, because the mean of its divisors is an integer number (16554393765).

Almost surely, 2^66217575054 is an apocalyptic number.

66217575054 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.

66217575054 is a wasteful number, since it uses less digits than its factorization.

66217575054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036262514.

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 66217575054 in words is "sixty-six billion, two hundred seventeen million, five hundred seventy-five thousand, fifty-four".