66711044034 has 24 divisors (see below), whose sum is σ = 146030708460. Its totient is φ = 22007766528.

The previous prime is 66711044011. The next prime is 66711044069. The reversal of 66711044034 is 43044011766.

It can be written as a sum of positive squares in 2 ways, for example, as 61085594025 + 5625450009 = 247155^2 + 75003^2 .

It is a super-2 number, since 2×66711044034² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66711044034.

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, 19102219 + ... + 19105710.

Almost surely, 2^66711044034 is an apocalyptic number.

66711044034 is an abundant number, since it is smaller than the sum of its proper divisors (79319664426).

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

66711044034 is a wasteful number, since it uses less digits than its factorization.

66711044034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38208034 (or 38208031 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 66711044034 in words is "sixty-six billion, seven hundred eleven million, forty-four thousand, thirty-four".