66000143605563 has 48 divisors (see below), whose sum is σ = 98979563504640. Its totient is φ = 43948864728576.

The previous prime is 66000143605559. The next prime is 66000143605579. The reversal of 66000143605563 is 36550634100066.

66000143605563 is a `hidden beast` number, since 6 + 60 + 0 + 0 + 1 + 4 + 36 + 0 + 556 + 3 = 666.

It is not a de Polignac number, because 66000143605563 - 2² = 66000143605559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66000143605523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1395416731 + ... + 1395464027.

It is an arithmetic number, because the mean of its divisors is an integer number (2062074239680).

Almost surely, 2^{66000143605563} is an apocalyptic number.

66000143605563 is a deficient number, since it is larger than the sum of its proper divisors (32979419899077).

66000143605563 is a wasteful number, since it uses less digits than its factorization.

66000143605563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53878 (or 53866 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 66000143605563 in words is "sixty-six trillion, one hundred forty-three million, six hundred five thousand, five hundred sixty-three".