326440136401 has 2 divisors, whose sum is σ = 326440136402. Its totient is φ = 326440136400.

The previous prime is 326440136377. The next prime is 326440136413. The reversal of 326440136401 is 104631044623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234255032001 + 92185104400 = 483999^2 + 303620^2 .

It is a cyclic number.

It is not a de Polignac number, because 326440136401 - 2⁵ = 326440136369 is a prime.

It is not a weakly prime, because it can be changed into another prime (326440136461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163220068200 + 163220068201.

It is an arithmetic number, because the mean of its divisors is an integer number (163220068201).

Almost surely, 2^326440136401 is an apocalyptic number.

It is an amenable number.

326440136401 is a deficient number, since it is larger than the sum of its proper divisors (1).

326440136401 is an equidigital number, since it uses as much as digits as its factorization.

326440136401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 326440136401 in words is "three hundred twenty-six billion, four hundred forty million, one hundred thirty-six thousand, four hundred one".