66396308482449 has 45 divisors (see below), whose sum is σ = 109022423695801. Its totient is φ = 40239698055480.

The previous prime is 66396308482403. The next prime is 66396308482451. The reversal of 66396308482449 is 94428480369366.

The square root of 66396308482449 is 8148393.

It is a perfect power (a square), and thus also a powerful number.

66396308482449 is a `hidden beast` number, since 6 + 6 + 39 + 6 + 308 + 48 + 244 + 9 = 666.

It is not a de Polignac number, because 66396308482449 - 2²⁵ = 66396274928017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66396308482249) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 806649754 + ... + 806732060.

Almost surely, 2^{66396308482449} is an apocalyptic number.

66396308482449 is the 8148393-rd square number.

66396308482449 is the 4074197-th centered octagonal number.

It is an amenable number.

66396308482449 is a deficient number, since it is larger than the sum of its proper divisors (42626115213352).

66396308482449 is an frugal number, since it uses more digits than its factorization.

66396308482449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164648 (or 82321 counting only the distinct ones).

The product of its (nonzero) digits is 1289945088, while the sum is 72.

The spelling of 66396308482449 in words is "sixty-six trillion, three hundred ninety-six billion, three hundred eight million, four hundred eighty-two thousand, four hundred forty-nine".