66000555555005 has 8 divisors (see below), whose sum is σ = 79674922156032. Its totient is φ = 52484274117328.

The previous prime is 66000555554849. The next prime is 66000555555017. The reversal of 66000555555005 is 50055555500066.

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

It is a cyclic number.

It is not a de Polignac number, because 66000555555005 - 2²⁶ = 66000488446141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39521289917 + ... + 39521291586.

It is an arithmetic number, because the mean of its divisors is an integer number (9959365269504).

Almost surely, 2^{66000555555005} is an apocalyptic number.

It is an amenable number.

66000555555005 is a deficient number, since it is larger than the sum of its proper divisors (13674366601027).

66000555555005 is a wasteful number, since it uses less digits than its factorization.

66000555555005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79042581675.

The product of its (nonzero) digits is 2812500, while the sum is 47.

The spelling of 66000555555005 in words is "sixty-six trillion, five hundred fifty-five million, five hundred fifty-five thousand, five".