40338165473 has 2 divisors, whose sum is σ = 40338165474. Its totient is φ = 40338165472.

The previous prime is 40338165407. The next prime is 40338165503. The reversal of 40338165473 is 37456183304.

40338165473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40315820944 + 22344529 = 200788^2 + 4727^2 .

It is a cyclic number.

It is not a de Polignac number, because 40338165473 - 2¹⁸ = 40337903329 is a prime.

It is not a weakly prime, because it can be changed into another prime (40338167473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20169082736 + 20169082737.

It is an arithmetic number, because the mean of its divisors is an integer number (20169082737).

Almost surely, 2^40338165473 is an apocalyptic number.

It is an amenable number.

40338165473 is a deficient number, since it is larger than the sum of its proper divisors (1).

40338165473 is an equidigital number, since it uses as much as digits as its factorization.

40338165473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 40338165473 in words is "forty billion, three hundred thirty-eight million, one hundred sixty-five thousand, four hundred seventy-three".