13726726347 has 54 divisors (see below), whose sum is σ = 20442465652. Its totient is φ = 8190755584.

The previous prime is 13726726337. The next prime is 13726726367. The reversal of 13726726347 is 74362762731.

It is a happy number.

13726726347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13726726347 - 2¹⁰ = 13726725323 is a prime.

It is a Duffinian number.

Its product of digits (1778112) is a multiple of the sum of its prime divisors (216).

It is a junction number, because it is equal to n+sod(n) for n = 13726726296 and 13726726305.

It is not an unprimeable number, because it can be changed into a prime (13726726337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 79345153 + ... + 79345325.

Almost surely, 2^13726726347 is an apocalyptic number.

13726726347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13726726347 is a deficient number, since it is larger than the sum of its proper divisors (6715739305).

13726726347 is an equidigital number, since it uses as much as digits as its factorization.

13726726347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 216 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 48.

Multiplying 13726726347 by its sum of digits (48), we get a square (658882864656 = 811716²).

The spelling of 13726726347 in words is "thirteen billion, seven hundred twenty-six million, seven hundred twenty-six thousand, three hundred forty-seven".