13681720848 has 80 divisors (see below), whose sum is σ = 35596846656. Its totient is φ = 4528128000.

The previous prime is 13681720847. The next prime is 13681720859. The reversal of 13681720848 is 84802718631.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 13681720797 and 13681720806.

It is not an unprimeable number, because it can be changed into a prime (13681720847) 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, 4251336 + ... + 4254552.

Almost surely, 2^13681720848 is an apocalyptic number.

It is an amenable number.

13681720848 is an abundant number, since it is smaller than the sum of its proper divisors (21915125808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13681720848 is a wasteful number, since it uses less digits than its factorization.

13681720848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832 (or 3826 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 13681720848 in words is "thirteen billion, six hundred eighty-one million, seven hundred twenty thousand, eight hundred forty-eight".