40619966774389 has 2 divisors, whose sum is σ = 40619966774390. Its totient is φ = 40619966774388.

The previous prime is 40619966774377. The next prime is 40619966774419. The reversal of 40619966774389 is 98347766991604.

40619966774389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35205116892100 + 5414849882289 = 5933390^2 + 2326983^2 .

It is a cyclic number.

It is not a de Polignac number, because 40619966774389 - 2⁹ = 40619966773877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40619966774789) 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, 20309983387194 + 20309983387195.

It is an arithmetic number, because the mean of its divisors is an integer number (20309983387195).

Almost surely, 2^{40619966774389} is an apocalyptic number.

It is an amenable number.

40619966774389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40619966774389 is an equidigital number, since it uses as much as digits as its factorization.

40619966774389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2962842624, while the sum is 79.

The spelling of 40619966774389 in words is "forty trillion, six hundred nineteen billion, nine hundred sixty-six million, seven hundred seventy-four thousand, three hundred eighty-nine".