40543344437 has 2 divisors, whose sum is σ = 40543344438. Its totient is φ = 40543344436.

The previous prime is 40543344371. The next prime is 40543344481. The reversal of 40543344437 is 73444334504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21459027121 + 19084317316 = 146489^2 + 138146^2 .

It is a cyclic number.

It is not a de Polignac number, because 40543344437 - 2⁸ = 40543344181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40543344394 and 40543344403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40543344487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20271672218 + 20271672219.

It is an arithmetic number, because the mean of its divisors is an integer number (20271672219).

Almost surely, 2^40543344437 is an apocalyptic number.

It is an amenable number.

40543344437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40543344437 is an equidigital number, since it uses as much as digits as its factorization.

40543344437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 41.

The spelling of 40543344437 in words is "forty billion, five hundred forty-three million, three hundred forty-four thousand, four hundred thirty-seven".