13955081718647 has 2 divisors, whose sum is σ = 13955081718648. Its totient is φ = 13955081718646.

The previous prime is 13955081718581. The next prime is 13955081718661. The reversal of 13955081718647 is 74681718055931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13955081718647 - 2²² = 13955077524343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13955081718047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6977540859323 + 6977540859324.

It is an arithmetic number, because the mean of its divisors is an integer number (6977540859324).

Almost surely, 2^{13955081718647} is an apocalyptic number.

13955081718647 is a deficient number, since it is larger than the sum of its proper divisors (1).

13955081718647 is an equidigital number, since it uses as much as digits as its factorization.

13955081718647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50803200, while the sum is 65.

The spelling of 13955081718647 in words is "thirteen trillion, nine hundred fifty-five billion, eighty-one million, seven hundred eighteen thousand, six hundred forty-seven".