13162243522621 has 2 divisors, whose sum is σ = 13162243522622. Its totient is φ = 13162243522620.

The previous prime is 13162243522531. The next prime is 13162243522733. The reversal of 13162243522621 is 12622534226131.

13162243522621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9653983411396 + 3508260111225 = 3107086^2 + 1873035^2 .

It is a cyclic number.

It is not a de Polignac number, because 13162243522621 - 2¹⁵ = 13162243489853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13162243522921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6581121761310 + 6581121761311.

It is an arithmetic number, because the mean of its divisors is an integer number (6581121761311).

Almost surely, 2^{13162243522621} is an apocalyptic number.

It is an amenable number.

13162243522621 is a deficient number, since it is larger than the sum of its proper divisors (1).

13162243522621 is an equidigital number, since it uses as much as digits as its factorization.

13162243522621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

Adding to 13162243522621 its reverse (12622534226131), we get a palindrome (25784777748752).

The spelling of 13162243522621 in words is "thirteen trillion, one hundred sixty-two billion, two hundred forty-three million, five hundred twenty-two thousand, six hundred twenty-one".