13881630656 has 14 divisors (see below), whose sum is σ = 27546360960. Its totient is φ = 6940815296.

The previous prime is 13881630599. The next prime is 13881630673. The reversal of 13881630656 is 65603618831.

It is a self number, because there is not a number n which added to its sum of digits gives 13881630656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108450176 + ... + 108450303.

Almost surely, 2^13881630656 is an apocalyptic number.

13881630656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13881630656 is a deficient number, since it is larger than the sum of its proper divisors (13664730304).

13881630656 is an equidigital number, since it uses as much as digits as its factorization.

13881630656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216900491 (or 216900481 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 13881630656 in words is "thirteen billion, eight hundred eighty-one million, six hundred thirty thousand, six hundred fifty-six".