40623603836437 has 2 divisors, whose sum is σ = 40623603836438. Its totient is φ = 40623603836436.

The previous prime is 40623603836407. The next prime is 40623603836461. The reversal of 40623603836437 is 73463830632604.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39535032960721 + 1088570875716 = 6287689^2 + 1043346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40623603836437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40623603836407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20311801918218 + 20311801918219.

It is an arithmetic number, because the mean of its divisors is an integer number (20311801918219).

Almost surely, 2^{40623603836437} is an apocalyptic number.

It is an amenable number.

40623603836437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40623603836437 is an equidigital number, since it uses as much as digits as its factorization.

40623603836437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31352832, while the sum is 55.

The spelling of 40623603836437 in words is "forty trillion, six hundred twenty-three billion, six hundred three million, eight hundred thirty-six thousand, four hundred thirty-seven".