66211562010 has 32 divisors (see below), whose sum is σ = 173353908672. Its totient is φ = 16051287680.

The previous prime is 66211561991. The next prime is 66211562057. The reversal of 66211562010 is 1026511266.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100320219 + ... + 100320878.

It is an arithmetic number, because the mean of its divisors is an integer number (5417309646).

Almost surely, 2^66211562010 is an apocalyptic number.

66211562010 is an abundant number, since it is smaller than the sum of its proper divisors (107142346662).

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

66211562010 is a wasteful number, since it uses less digits than its factorization.

66211562010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200641118.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 66211562010 in words is "sixty-six billion, two hundred eleven million, five hundred sixty-two thousand, ten".