14013781348921 has 2 divisors, whose sum is σ = 14013781348922. Its totient is φ = 14013781348920.

The previous prime is 14013781348913. The next prime is 14013781348927. The reversal of 14013781348921 is 12984318731041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13803342631225 + 210438717696 = 3715285^2 + 458736^2 .

It is a cyclic number.

It is not a de Polignac number, because 14013781348921 - 2³ = 14013781348913 is a prime.

It is not a weakly prime, because it can be changed into another prime (14013781348927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7006890674460 + 7006890674461.

It is an arithmetic number, because the mean of its divisors is an integer number (7006890674461).

Almost surely, 2^{14013781348921} is an apocalyptic number.

It is an amenable number.

14013781348921 is a deficient number, since it is larger than the sum of its proper divisors (1).

14013781348921 is an equidigital number, since it uses as much as digits as its factorization.

14013781348921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 14013781348921 in words is "fourteen trillion, thirteen billion, seven hundred eighty-one million, three hundred forty-eight thousand, nine hundred twenty-one".