66056600006 has 4 divisors (see below), whose sum is σ = 99084900012. Its totient is φ = 33028300002.

The previous prime is 66056600003. The next prime is 66056600023. The reversal of 66056600006 is 60000665066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60000665066 = 2 ⋅30000332533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66056600003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16514150000 + ... + 16514150003.

It is an arithmetic number, because the mean of its divisors is an integer number (24771225003).

Almost surely, 2^66056600006 is an apocalyptic number.

66056600006 is a deficient number, since it is larger than the sum of its proper divisors (33028300006).

66056600006 is a wasteful number, since it uses less digits than its factorization.

66056600006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33028300005.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 66056600006 in words is "sixty-six billion, fifty-six million, six hundred thousand, six".