66065295172 has 12 divisors (see below), whose sum is σ = 116025707196. Its totient is φ = 32915093120.

The previous prime is 66065295169. The next prime is 66065295173. The reversal of 66065295172 is 27159256066.

66065295172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 53951211076 + 12114084096 = 232274^2 + 110064^2 .

It is not an unprimeable number, because it can be changed into a prime (66065295173) 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, 29387353 + ... + 29389600.

It is an arithmetic number, because the mean of its divisors is an integer number (9668808933).

Almost surely, 2^66065295172 is an apocalyptic number.

It is an amenable number.

66065295172 is a deficient number, since it is larger than the sum of its proper divisors (49960412024).

66065295172 is a wasteful number, since it uses less digits than its factorization.

66065295172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58777238 (or 58777236 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 66065295172 in words is "sixty-six billion, sixty-five million, two hundred ninety-five thousand, one hundred seventy-two".