66442106045452 has 12 divisors (see below), whose sum is σ = 116280548336736. Its totient is φ = 33219092234960.

The previous prime is 66442106045423. The next prime is 66442106045461. The reversal of 66442106045452 is 25454060124466.

It is a junction number, because it is equal to n+sod(n) for n = 66442106045396 and 66442106045405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490120699 + ... + 490256242.

It is an arithmetic number, because the mean of its divisors is an integer number (9690045694728).

Almost surely, 2^{66442106045452} is an apocalyptic number.

It is an amenable number.

66442106045452 is a deficient number, since it is larger than the sum of its proper divisors (49838442291284).

66442106045452 is a wasteful number, since it uses less digits than its factorization.

66442106045452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980393888 (or 980393886 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 49.

The spelling of 66442106045452 in words is "sixty-six trillion, four hundred forty-two billion, one hundred six million, forty-five thousand, four hundred fifty-two".