66066056155 has 8 divisors (see below), whose sum is σ = 86486473584. Its totient is φ = 48048040800.

The previous prime is 66066056153. The next prime is 66066056171. The reversal of 66066056155 is 55165066066.

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

It is not a de Polignac number, because 66066056155 - 2¹ = 66066056153 is a prime.

It is a super-2 number, since 2×66066056155² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66066056153) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 600600456 + ... + 600600565.

It is an arithmetic number, because the mean of its divisors is an integer number (10810809198).

Almost surely, 2^66066056155 is an apocalyptic number.

66066056155 is a deficient number, since it is larger than the sum of its proper divisors (20420417429).

66066056155 is a wasteful number, since it uses less digits than its factorization.

66066056155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201201037.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 66066056155 in words is "sixty-six billion, sixty-six million, fifty-six thousand, one hundred fifty-five".