13926690805247 has 8 divisors (see below), whose sum is σ = 16086444994512. Its totient is φ = 11915885180800.

The previous prime is 13926690805243. The next prime is 13926690805253. The reversal of 13926690805247 is 74250809662931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13926690805247 - 2² = 13926690805243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13926690805247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13926690805243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37237141004 + ... + 37237141377.

It is an arithmetic number, because the mean of its divisors is an integer number (2010805624314).

It is a 2-persistent number, because it is pandigital, and so is 2⋅13926690805247 = 27853381610494, but 3⋅13926690805247 = 41780072415741 is not.

Almost surely, 2^{13926690805247} is an apocalyptic number.

13926690805247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13926690805247 is a deficient number, since it is larger than the sum of its proper divisors (2159754189265).

13926690805247 is a wasteful number, since it uses less digits than its factorization.

13926690805247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74474282409.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 13926690805247 in words is "thirteen trillion, nine hundred twenty-six billion, six hundred ninety million, eight hundred five thousand, two hundred forty-seven".