63684847369 has 16 divisors (see below), whose sum is σ = 74832609600. Its totient is φ = 53431796160.

The previous prime is 63684847327. The next prime is 63684847399. The reversal of 63684847369 is 96374848636.

It is a cyclic number.

It is not a de Polignac number, because 63684847369 - 2⁹ = 63684846857 is a prime.

It is a super-2 number, since 2×63684847369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63684847369.

It is not an unprimeable number, because it can be changed into a prime (63684847399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778582 + ... + 856480.

It is an arithmetic number, because the mean of its divisors is an integer number (4677038100).

Almost surely, 2^63684847369 is an apocalyptic number.

It is an amenable number.

63684847369 is a deficient number, since it is larger than the sum of its proper divisors (11147762231).

63684847369 is a wasteful number, since it uses less digits than its factorization.

63684847369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83640.

The product of its digits is 125411328, while the sum is 64.

The spelling of 63684847369 in words is "sixty-three billion, six hundred eighty-four million, eight hundred forty-seven thousand, three hundred sixty-nine".