163126202401 has 2 divisors, whose sum is σ = 163126202402. Its totient is φ = 163126202400.

The previous prime is 163126202399. The next prime is 163126202411. The reversal of 163126202401 is 104202621361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154024851600 + 9101350801 = 392460^2 + 95401^2 .

It is an emirp because it is prime and its reverse (104202621361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163126202401 - 2¹ = 163126202399 is a prime.

It is a super-2 number, since 2×163126202401² (a number of 23 digits) contains 22 as substring.

Together with 163126202399, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 163126202401.

It is not a weakly prime, because it can be changed into another prime (163126202411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81563101200 + 81563101201.

It is an arithmetic number, because the mean of its divisors is an integer number (81563101201).

Almost surely, 2^163126202401 is an apocalyptic number.

It is an amenable number.

163126202401 is a deficient number, since it is larger than the sum of its proper divisors (1).

163126202401 is an equidigital number, since it uses as much as digits as its factorization.

163126202401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 163126202401 its reverse (104202621361), we get a palindrome (267328823762).

The spelling of 163126202401 in words is "one hundred sixty-three billion, one hundred twenty-six million, two hundred two thousand, four hundred one".