66165654005 has 8 divisors (see below), whose sum is σ = 86616856224. Its totient is φ = 48120475600.

The previous prime is 66165654001. The next prime is 66165654011. The reversal of 66165654005 is 50045656166.

It is a happy number.

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

It is not a de Polignac number, because 66165654005 - 2² = 66165654001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66165654001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601505891 + ... + 601506000.

It is an arithmetic number, because the mean of its divisors is an integer number (10827107028).

Almost surely, 2^66165654005 is an apocalyptic number.

It is an amenable number.

66165654005 is a deficient number, since it is larger than the sum of its proper divisors (20451202219).

66165654005 is a wasteful number, since it uses less digits than its factorization.

66165654005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203011907.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 66165654005 in words is "sixty-six billion, one hundred sixty-five million, six hundred fifty-four thousand, five".