66004642555432 has 16 divisors (see below), whose sum is σ = 141438519761760. Its totient is φ = 28287703952304.

The previous prime is 66004642555231. The next prime is 66004642555433. The reversal of 66004642555432 is 23455524640066.

66004642555432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66004642555432² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66004642555432.

It is not an unprimeable number, because it can be changed into a prime (66004642555433) 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 3 ways as a sum of consecutive naturals, for example, 589327165618 + ... + 589327165729.

It is an arithmetic number, because the mean of its divisors is an integer number (8839907485110).

Almost surely, 2^{66004642555432} is an apocalyptic number.

It is an amenable number.

66004642555432 is an abundant number, since it is smaller than the sum of its proper divisors (75433877206328).

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

66004642555432 is a wasteful number, since it uses less digits than its factorization.

66004642555432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178654331360 (or 1178654331356 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 52.

The spelling of 66004642555432 in words is "sixty-six trillion, four billion, six hundred forty-two million, five hundred fifty-five thousand, four hundred thirty-two".