40326336437 has 2 divisors, whose sum is σ = 40326336438. Its totient is φ = 40326336436.

The previous prime is 40326336409. The next prime is 40326336499. The reversal of 40326336437 is 73463362304.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37175310481 + 3151025956 = 192809^2 + 56134^2 .

It is a cyclic number.

It is not a de Polignac number, because 40326336437 - 2²⁰ = 40325287861 is a prime.

It is a super-2 number, since 2×40326336437² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40326336394 and 40326336403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40326336637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20163168218 + 20163168219.

It is an arithmetic number, because the mean of its divisors is an integer number (20163168219).

Almost surely, 2^40326336437 is an apocalyptic number.

It is an amenable number.

40326336437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40326336437 is an equidigital number, since it uses as much as digits as its factorization.

40326336437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 41.

The spelling of 40326336437 in words is "forty billion, three hundred twenty-six million, three hundred thirty-six thousand, four hundred thirty-seven".