39740392411991 has 2 divisors, whose sum is σ = 39740392411992. Its totient is φ = 39740392411990.

The previous prime is 39740392411949. The next prime is 39740392411999. The reversal of 39740392411991 is 19911429304793.

39740392411991 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 is a cyclic number.

It is not a de Polignac number, because 39740392411991 - 2¹⁰ = 39740392410967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39740392411999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19870196205995 + 19870196205996.

It is an arithmetic number, because the mean of its divisors is an integer number (19870196205996).

Almost surely, 2^{39740392411991} is an apocalyptic number.

39740392411991 is a deficient number, since it is larger than the sum of its proper divisors (1).

39740392411991 is an equidigital number, since it uses as much as digits as its factorization.

39740392411991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13226976, while the sum is 62.

The spelling of 39740392411991 in words is "thirty-nine trillion, seven hundred forty billion, three hundred ninety-two million, four hundred eleven thousand, nine hundred ninety-one".