66307607606 has 4 divisors (see below), whose sum is σ = 99461411412. Its totient is φ = 33153803802.

The previous prime is 66307607591. The next prime is 66307607627. The reversal of 66307607606 is 60670670366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60670670366 = 2 ⋅30335335183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16576901900 + ... + 16576901903.

It is an arithmetic number, because the mean of its divisors is an integer number (24865352853).

Almost surely, 2^66307607606 is an apocalyptic number.

66307607606 is a deficient number, since it is larger than the sum of its proper divisors (33153803806).

66307607606 is a wasteful number, since it uses less digits than its factorization.

66307607606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33153803805.

The product of its (nonzero) digits is 1143072, while the sum is 47.

It can be divided in two parts, 6630760 and 7606, that added together give a palindrome (6638366).

The spelling of 66307607606 in words is "sixty-six billion, three hundred seven million, six hundred seven thousand, six hundred six".