66750045210 has 24 divisors (see below), whose sum is σ = 173550117780. Its totient is φ = 17800012032.

The previous prime is 66750045209. The next prime is 66750045223. The reversal of 66750045210 is 1254005766.

It is a happy number.

66750045210 is a `hidden beast` number, since 66 + 75 + 0 + 0 + 4 + 521 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57210420969 + 9539624241 = 239187^2 + 97671^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 370833495 + ... + 370833674.

Almost surely, 2^66750045210 is an apocalyptic number.

66750045210 is an abundant number, since it is smaller than the sum of its proper divisors (106800072570).

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

66750045210 is a wasteful number, since it uses less digits than its factorization.

66750045210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741667182 (or 741667179 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 66750045210 in words is "sixty-six billion, seven hundred fifty million, forty-five thousand, two hundred ten".