66009344410 has 32 divisors (see below), whose sum is σ = 125911875600. Its totient is φ = 24871472640.

The previous prime is 66009344407. The next prime is 66009344411. The reversal of 66009344410 is 1444390066.

It can be written as a sum of positive squares in 8 ways, for example, as 1044000721 + 64965343689 = 32311^2 + 254883^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66009344410.

It is not an unprimeable number, because it can be changed into a prime (66009344411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2763945 + ... + 2787724.

Almost surely, 2^66009344410 is an apocalyptic number.

66009344410 is a deficient number, since it is larger than the sum of its proper divisors (59902531190).

66009344410 is a wasteful number, since it uses less digits than its factorization.

66009344410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551746.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 66009344410 in words is "sixty-six billion, nine million, three hundred forty-four thousand, four hundred ten".