66117085092 has 36 divisors (see below), whose sum is σ = 167158607616. Its totient is φ = 22035163440.

The previous prime is 66117085061. The next prime is 66117085109. The reversal of 66117085092 is 29058071166.

66117085092 is a `hidden beast` number, since 66 + 11 + 70 + 8 + 509 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50917 + ... + 367187.

It is an arithmetic number, because the mean of its divisors is an integer number (4643294656).

Almost surely, 2^66117085092 is an apocalyptic number.

It is an amenable number.

66117085092 is an abundant number, since it is smaller than the sum of its proper divisors (101041522524).

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

66117085092 is a wasteful number, since it uses less digits than its factorization.

66117085092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322088 (or 322083 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 66117085092 in words is "sixty-six billion, one hundred seventeen million, eighty-five thousand, ninety-two".