326440136437 has 2 divisors, whose sum is σ = 326440136438. Its totient is φ = 326440136436.

The previous prime is 326440136413. The next prime is 326440136461. The reversal of 326440136437 is 734631044623.

It is a balanced prime because it is at equal distance from previous prime (326440136413) and next prime (326440136461).

It can be written as a sum of positive squares in only one way, i.e., 264515804721 + 61924331716 = 514311^2 + 248846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326440136437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 326440136393 and 326440136402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326440136237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163220068218 + 163220068219.

It is an arithmetic number, because the mean of its divisors is an integer number (163220068219).

Almost surely, 2^326440136437 is an apocalyptic number.

It is an amenable number.

326440136437 is a deficient number, since it is larger than the sum of its proper divisors (1).

326440136437 is an equidigital number, since it uses as much as digits as its factorization.

326440136437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 43.

The spelling of 326440136437 in words is "three hundred twenty-six billion, four hundred forty million, one hundred thirty-six thousand, four hundred thirty-seven".