40384072856069 has 2 divisors, whose sum is σ = 40384072856070. Its totient is φ = 40384072856068.

The previous prime is 40384072856027. The next prime is 40384072856077. The reversal of 40384072856069 is 96065827048304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23229151433569 + 17154921422500 = 4819663^2 + 4141850^2 .

It is a cyclic number.

It is not a de Polignac number, because 40384072856069 - 2³⁶ = 40315353379333 is a prime.

It is a super-2 number, since 2×40384072856069² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40384072856009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20192036428034 + 20192036428035.

It is an arithmetic number, because the mean of its divisors is an integer number (20192036428035).

Almost surely, 2^{40384072856069} is an apocalyptic number.

It is an amenable number.

40384072856069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40384072856069 is an equidigital number, since it uses as much as digits as its factorization.

40384072856069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69672960, while the sum is 62.

The spelling of 40384072856069 in words is "forty trillion, three hundred eighty-four billion, seventy-two million, eight hundred fifty-six thousand, sixty-nine".