66393756045 has 12 divisors (see below), whose sum is σ = 115082510556. Its totient is φ = 35410003200.

The previous prime is 66393756007. The next prime is 66393756059. The reversal of 66393756045 is 54065739366.

66393756045 is a `hidden beast` number, since 6 + 6 + 3 + 9 + 37 + 560 + 45 = 666.

66393756045 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 7032331881 + 59361424164 = 83859^2 + 243642^2 .

It is not a de Polignac number, because 66393756045 - 2⁷ = 66393755917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66393755982 and 66393756000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 737708356 + ... + 737708445.

It is an arithmetic number, because the mean of its divisors is an integer number (9590209213).

Almost surely, 2^66393756045 is an apocalyptic number.

It is an amenable number.

66393756045 is a deficient number, since it is larger than the sum of its proper divisors (48688754511).

66393756045 is a wasteful number, since it uses less digits than its factorization.

66393756045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475416812 (or 1475416809 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 54.

The spelling of 66393756045 in words is "sixty-six billion, three hundred ninety-three million, seven hundred fifty-six thousand, forty-five".