13440313273 has 2 divisors, whose sum is σ = 13440313274. Its totient is φ = 13440313272.

The previous prime is 13440313267. The next prime is 13440313303. The reversal of 13440313273 is 37231304431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7095872169 + 6344441104 = 84237^2 + 79652^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13440313273 is a prime.

It is not a weakly prime, because it can be changed into another prime (13440313253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720156636 + 6720156637.

It is an arithmetic number, because the mean of its divisors is an integer number (6720156637).

Almost surely, 2^13440313273 is an apocalyptic number.

It is an amenable number.

13440313273 is a deficient number, since it is larger than the sum of its proper divisors (1).

13440313273 is an equidigital number, since it uses as much as digits as its factorization.

13440313273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 31.

The spelling of 13440313273 in words is "thirteen billion, four hundred forty million, three hundred thirteen thousand, two hundred seventy-three".