13988726856 has 96 divisors (see below), whose sum is σ = 41409600960. Its totient is φ = 4239962496.

The previous prime is 13988726849. The next prime is 13988726861. The reversal of 13988726856 is 65862788931.

It is a junction number, because it is equal to n+sod(n) for n = 13988726793 and 13988726802.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48820 + ... + 174243.

It is an arithmetic number, because the mean of its divisors is an integer number (431350010).

Almost surely, 2^13988726856 is an apocalyptic number.

It is an amenable number.

13988726856 is an abundant number, since it is smaller than the sum of its proper divisors (27420874104).

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

13988726856 is a wasteful number, since it uses less digits than its factorization.

13988726856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223155 (or 223148 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 13988726856 in words is "thirteen billion, nine hundred eighty-eight million, seven hundred twenty-six thousand, eight hundred fifty-six".