66072450727 has 12 divisors (see below), whose sum is σ = 70101000760. Its totient is φ = 62256422448.

The previous prime is 66072450713. The next prime is 66072450751. The reversal of 66072450727 is 72705427066.

It is not a de Polignac number, because 66072450727 - 2¹¹ = 66072448679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66072450797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 896652 + ... + 967537.

Almost surely, 2^66072450727 is an apocalyptic number.

66072450727 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

66072450727 is a deficient number, since it is larger than the sum of its proper divisors (4028550033).

66072450727 is a wasteful number, since it uses less digits than its factorization.

66072450727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864302 (or 1864279 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 66072450727 in words is "sixty-six billion, seventy-two million, four hundred fifty thousand, seven hundred twenty-seven".