66463343312050 has 24 divisors (see below), whose sum is σ = 123623385377076. Its totient is φ = 26585000375040.

The previous prime is 66463343312033. The next prime is 66463343312059. The reversal of 66463343312050 is 5021334336466.

It can be written as a sum of positive squares in 6 ways, for example, as 8768213887689 + 57695129424361 = 2961117^2 + 7595731^2 .

It is not an unprimeable number, because it can be changed into a prime (66463343312059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4420459 + ... + 12347758.

Almost surely, 2^{66463343312050} is an apocalyptic number.

66463343312050 is a deficient number, since it is larger than the sum of its proper divisors (57160042065026).

66463343312050 is a wasteful number, since it uses less digits than its factorization.

66463343312050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16847502 (or 16847497 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 46.

The spelling of 66463343312050 in words is "sixty-six trillion, four hundred sixty-three billion, three hundred forty-three million, three hundred twelve thousand, fifty".