66280682853 has 36 divisors (see below), whose sum is σ = 121494099168. Its totient is φ = 34431521040.

The previous prime is 66280682851. The next prime is 66280682857. The reversal of 66280682853 is 35828608266.

66280682853 is a `hidden beast` number, since 6 + 628 + 0 + 6 + 8 + 2 + 8 + 5 + 3 = 666.

It is not a de Polignac number, because 66280682853 - 2¹ = 66280682851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66280682853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66280682851) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6826801 + ... + 6836502.

It is an arithmetic number, because the mean of its divisors is an integer number (3374836088).

Almost surely, 2^66280682853 is an apocalyptic number.

66280682853 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

66280682853 is a deficient number, since it is larger than the sum of its proper divisors (55213416315).

66280682853 is a wasteful number, since it uses less digits than its factorization.

66280682853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13663334 (or 13663324 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 66280682853 in words is "sixty-six billion, two hundred eighty million, six hundred eighty-two thousand, eight hundred fifty-three".