63685795279 has 4 divisors (see below), whose sum is σ = 64171946520. Its totient is φ = 63199644040.

The previous prime is 63685795247. The next prime is 63685795289. The reversal of 63685795279 is 97259758636.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63685795279 - 2⁵ = 63685795247 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 (63685795289) 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 3 ways as a sum of consecutive naturals, for example, 243075424 + ... + 243075685.

It is an arithmetic number, because the mean of its divisors is an integer number (16042986630).

Almost surely, 2^63685795279 is an apocalyptic number.

63685795279 is a deficient number, since it is larger than the sum of its proper divisors (486151241).

63685795279 is a wasteful number, since it uses less digits than its factorization.

63685795279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486151240.

The product of its digits is 171460800, while the sum is 67.

The spelling of 63685795279 in words is "sixty-three billion, six hundred eighty-five million, seven hundred ninety-five thousand, two hundred seventy-nine".