40781033380337 has 2 divisors, whose sum is σ = 40781033380338. Its totient is φ = 40781033380336.

The previous prime is 40781033380333. The next prime is 40781033380349. The reversal of 40781033380337 is 73308333018704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39443411599201 + 1337621781136 = 6280399^2 + 1156556^2 .

It is a cyclic number.

It is not a de Polignac number, because 40781033380337 - 2² = 40781033380333 is a prime.

It is not a weakly prime, because it can be changed into another prime (40781033380331) 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, 20390516690168 + 20390516690169.

It is an arithmetic number, because the mean of its divisors is an integer number (20390516690169).

Almost surely, 2^{40781033380337} is an apocalyptic number.

It is an amenable number.

40781033380337 is a deficient number, since it is larger than the sum of its proper divisors (1).

40781033380337 is an equidigital number, since it uses as much as digits as its factorization.

40781033380337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 40781033380337 in words is "forty trillion, seven hundred eighty-one billion, thirty-three million, three hundred eighty thousand, three hundred thirty-seven".