40381400280329 has 2 divisors, whose sum is σ = 40381400280330. Its totient is φ = 40381400280328.

The previous prime is 40381400280317. The next prime is 40381400280521. The reversal of 40381400280329 is 92308200418304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34728061874704 + 5653338405625 = 5893052^2 + 2377675^2 .

It is a cyclic number.

It is not a de Polignac number, because 40381400280329 - 2⁴ = 40381400280313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40381400280329.

It is not a weakly prime, because it can be changed into another prime (40381400280229) 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, 20190700140164 + 20190700140165.

It is an arithmetic number, because the mean of its divisors is an integer number (20190700140165).

Almost surely, 2^{40381400280329} is an apocalyptic number.

It is an amenable number.

40381400280329 is a deficient number, since it is larger than the sum of its proper divisors (1).

40381400280329 is an equidigital number, since it uses as much as digits as its factorization.

40381400280329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 40381400280329 in words is "forty trillion, three hundred eighty-one billion, four hundred million, two hundred eighty thousand, three hundred twenty-nine".