66330530121 has 8 divisors (see below), whose sum is σ = 89004024064. Its totient is φ = 43938694800.

The previous prime is 66330530099. The next prime is 66330530129. The reversal of 66330530121 is 12103503366.

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 66330530121 - 2⁹ = 66330529609 is a prime.

It is a super-2 number, since 2×66330530121² (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 (66330530129) 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, 70414105 + ... + 70415046.

It is an arithmetic number, because the mean of its divisors is an integer number (11125503008).

Almost surely, 2^66330530121 is an apocalyptic number.

It is an amenable number.

66330530121 is a deficient number, since it is larger than the sum of its proper divisors (22673493943).

66330530121 is a wasteful number, since it uses less digits than its factorization.

66330530121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140829311.

The product of its (nonzero) digits is 9720, while the sum is 30.

The spelling of 66330530121 in words is "sixty-six billion, three hundred thirty million, five hundred thirty thousand, one hundred twenty-one".