13720722293 has 2 divisors, whose sum is σ = 13720722294. Its totient is φ = 13720722292.

The previous prime is 13720722277. The next prime is 13720722311. The reversal of 13720722293 is 39222702731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12016105924 + 1704616369 = 109618^2 + 41287^2 .

It is a cyclic number.

It is not a de Polignac number, because 13720722293 - 2⁴ = 13720722277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13720722793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6860361146 + 6860361147.

It is an arithmetic number, because the mean of its divisors is an integer number (6860361147).

Almost surely, 2^13720722293 is an apocalyptic number.

It is an amenable number.

13720722293 is a deficient number, since it is larger than the sum of its proper divisors (1).

13720722293 is an equidigital number, since it uses as much as digits as its factorization.

13720722293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 13720722293 in words is "thirteen billion, seven hundred twenty million, seven hundred twenty-two thousand, two hundred ninety-three".