66000706615 has 16 divisors (see below), whose sum is σ = 82040280480. Its totient is φ = 50912426880.

The previous prime is 66000706613. The next prime is 66000706627. The reversal of 66000706615 is 51660700066.

It is a happy number.

It is not a de Polignac number, because 66000706615 - 2¹ = 66000706613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000706613) 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, 190881 + ... + 410410.

It is an arithmetic number, because the mean of its divisors is an integer number (5127517530).

Almost surely, 2^66000706615 is an apocalyptic number.

66000706615 is a deficient number, since it is larger than the sum of its proper divisors (16039573865).

66000706615 is a wasteful number, since it uses less digits than its factorization.

66000706615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602082.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 66000706615 in words is "sixty-six billion, seven hundred six thousand, six hundred fifteen".