2162426413681 has 2 divisors, whose sum is σ = 2162426413682. Its totient is φ = 2162426413680.

The previous prime is 2162426413619. The next prime is 2162426413739. The reversal of 2162426413681 is 1863146242612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1191570911281 + 970855502400 = 1091591^2 + 985320^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162426413681 - 2¹⁵ = 2162426380913 is a prime.

It is a super-2 number, since 2×2162426413681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2162426213681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081213206840 + 1081213206841.

It is an arithmetic number, because the mean of its divisors is an integer number (1081213206841).

Almost surely, 2^{2162426413681} is an apocalyptic number.

It is an amenable number.

2162426413681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162426413681 is an equidigital number, since it uses as much as digits as its factorization.

2162426413681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 46.

The spelling of 2162426413681 in words is "two trillion, one hundred sixty-two billion, four hundred twenty-six million, four hundred thirteen thousand, six hundred eighty-one".