40873616389 has 2 divisors, whose sum is σ = 40873616390. Its totient is φ = 40873616388.

The previous prime is 40873616383. The next prime is 40873616423. The reversal of 40873616389 is 98361637804.

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., 37011988225 + 3861628164 = 192385^2 + 62142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40873616389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40873616383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20436808194 + 20436808195.

It is an arithmetic number, because the mean of its divisors is an integer number (20436808195).

Almost surely, 2^40873616389 is an apocalyptic number.

It is an amenable number.

40873616389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40873616389 is an equidigital number, since it uses as much as digits as its factorization.

40873616389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 40873616389 in words is "forty billion, eight hundred seventy-three million, six hundred sixteen thousand, three hundred eighty-nine".