41640786389 has 2 divisors, whose sum is σ = 41640786390. Its totient is φ = 41640786388.

The previous prime is 41640786373. The next prime is 41640786427. The reversal of 41640786389 is 98368704614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24468780625 + 17172005764 = 156425^2 + 131042^2 .

It is a cyclic number.

It is not a de Polignac number, because 41640786389 - 2⁴ = 41640786373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41640786349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20820393194 + 20820393195.

It is an arithmetic number, because the mean of its divisors is an integer number (20820393195).

Almost surely, 2^41640786389 is an apocalyptic number.

It is an amenable number.

41640786389 is a deficient number, since it is larger than the sum of its proper divisors (1).

41640786389 is an equidigital number, since it uses as much as digits as its factorization.

41640786389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 41640786389 in words is "forty-one billion, six hundred forty million, seven hundred eighty-six thousand, three hundred eighty-nine".