66745166269635 has 48 divisors (see below), whose sum is σ = 139996584052416. Its totient is φ = 28717248006144.

The previous prime is 66745166269609. The next prime is 66745166269637. The reversal of 66745166269635 is 53696266154766.

66745166269635 is a `hidden beast` number, since 6 + 6 + 7 + 451 + 66 + 26 + 96 + 3 + 5 = 666.

66745166269635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66745166269635 - 2¹² = 66745166265539 is a prime.

It is a super-2 number, since 2×66745166269635² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66745166269637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6232036314 + ... + 6232047023.

It is an arithmetic number, because the mean of its divisors is an integer number (2916595501092).

Almost surely, 2^{66745166269635} is an apocalyptic number.

66745166269635 is an abundant number, since it is smaller than the sum of its proper divisors (73251417782781).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66745166269635 is a wasteful number, since it uses less digits than its factorization.

66745166269635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12464083372 (or 12464083369 counting only the distinct ones).

The product of its digits is 1763596800, while the sum is 72.

The spelling of 66745166269635 in words is "sixty-six trillion, seven hundred forty-five billion, one hundred sixty-six million, two hundred sixty-nine thousand, six hundred thirty-five".