13863578656 has 12 divisors (see below), whose sum is σ = 27293920542. Its totient is φ = 6931789312.

The previous prime is 13863578633. The next prime is 13863578669. The reversal of 13863578656 is 65687536831.

It can be written as a sum of positive squares in only one way, i.e., 13113914256 + 749664400 = 114516^2 + 27380^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13863578656.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216618385 + ... + 216618448.

Almost surely, 2^13863578656 is an apocalyptic number.

13863578656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13863578656 is a deficient number, since it is larger than the sum of its proper divisors (13430341886).

13863578656 is an equidigital number, since it uses as much as digits as its factorization.

13863578656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433236843 (or 433236835 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 58.

The spelling of 13863578656 in words is "thirteen billion, eight hundred sixty-three million, five hundred seventy-eight thousand, six hundred fifty-six".