13122311636437 has 2 divisors, whose sum is σ = 13122311636438. Its totient is φ = 13122311636436.

The previous prime is 13122311636407. The next prime is 13122311636477. The reversal of 13122311636437 is 73463611322131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11131825200721 + 1990486435716 = 3336439^2 + 1410846^2 .

It is an emirp because it is prime and its reverse (73463611322131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13122311636437 - 2¹¹ = 13122311634389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13122311636393 and 13122311636402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13122311636407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561155818218 + 6561155818219.

It is an arithmetic number, because the mean of its divisors is an integer number (6561155818219).

Almost surely, 2^{13122311636437} is an apocalyptic number.

It is an amenable number.

13122311636437 is a deficient number, since it is larger than the sum of its proper divisors (1).

13122311636437 is an equidigital number, since it uses as much as digits as its factorization.

13122311636437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 43.

Adding to 13122311636437 its reverse (73463611322131), we get a palindrome (86585922958568).

The spelling of 13122311636437 in words is "thirteen trillion, one hundred twenty-two billion, three hundred eleven million, six hundred thirty-six thousand, four hundred thirty-seven".