66343653530 has 64 divisors (see below), whose sum is σ = 149171079168. Its totient is φ = 20638877760.

The previous prime is 66343653517. The next prime is 66343653533. The reversal of 66343653530 is 3535634366.

It is not an unprimeable number, because it can be changed into a prime (66343653533) 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 31 ways as a sum of consecutive naturals, for example, 320339 + ... + 485081.

It is an arithmetic number, because the mean of its divisors is an integer number (2330798112).

Almost surely, 2^66343653530 is an apocalyptic number.

66343653530 is an abundant number, since it is smaller than the sum of its proper divisors (82827425638).

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

66343653530 is a wasteful number, since it uses less digits than its factorization.

66343653530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165291.

The product of its (nonzero) digits is 1749600, while the sum is 44.

The spelling of 66343653530 in words is "sixty-six billion, three hundred forty-three million, six hundred fifty-three thousand, five hundred thirty".