66011772706 has 8 divisors (see below), whose sum is σ = 108019264464. Its totient is φ = 30005351220.

The previous prime is 66011772703. The next prime is 66011772731. The reversal of 66011772706 is 60727711066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66011772703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500267540 + ... + 1500267583.

It is an arithmetic number, because the mean of its divisors is an integer number (13502408058).

Almost surely, 2^66011772706 is an apocalyptic number.

66011772706 is a deficient number, since it is larger than the sum of its proper divisors (42007491758).

66011772706 is a wasteful number, since it uses less digits than its factorization.

66011772706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000535136.

The product of its (nonzero) digits is 148176, while the sum is 43.

The spelling of 66011772706 in words is "sixty-six billion, eleven million, seven hundred seventy-two thousand, seven hundred six".